user: Koren A Wake
mixer
waltz & break
by: Becky Hill
introduces moves: swing, circle, long lines, chain, star, do si do
formation: improper
A1  16  neighbors balance & swing

A2  8  circle left 3 places

8  partners swing
 
B1  8  long lines forward & back

8  ladles chain to neighbor
 
B2  8  star left 4 places ⁋

8  next neighbors do si do once

by: Chris Page
mixer
introduces moves: balance, turn alone, custom, gyre, promenade
formation: scatter mixer
A1  4  balance ring [1]

4  turn alone [2]
 
4  individual scatter promenade ⁋
 
4  find a new partner
 
A2  8  partners gyre once [3] [4]

8  partners swing
 
B1  8  partners promenade scatter [5]

8  join in rings of any number of couples [6]
 
B2  8  circle left 4 places

8  circle right 4 places

http://chrispagecontra.awardspace.us/dances/index.htm#accretionreel
[1] What ring? The circle at the end of B2. The first time through the dance, skip this part, and begin straight with the individual scatter promenade. (John Sweeney came up with a cool alternate beginning, with everyone in one big circle, before breaking it up into individual pieces. If so, you definitely also want the big circle for the final time through.)
David Millstone writes about a nice modification of this for ONS groups: "Chris's dance calls for folks to balance in and out, and even though I demonstrated that to a group, their inclination was to go into the center in four counts with a whoop! and their arms rising up. Who am I to fight the natural tendency of the dancers? I suspect that this feels more satisfying, and it still gives them 12 beats to say goodbye to their circle and to walk alone to find a new partner."
[2] When I'm calling for ONS (onenightstand) groups, I'll use "say goodbye" here. Then when they gyre later on, it's "say hello, and go around them, looking at them."
[3] Those allergic to gyres may wish to substitute a dosido, or skip it altogether and go straight to the swing. For an ONS group, substitute the swing with a twoallemande, elbow swing, or "whatever you think a swing should be."
[4] For more advanced groups, thegypsycan be with more than one other person. And the swing can be a basket swing.
[5] Last time through the dance, I like to have everyone promenade in one giant circle. Ditto for the final circles.
[6] Here each couple needs to find a few other couples to circle with. Lone couples could always twoallemande each other. James Hutson came up with a nice term for these variablesized circles  blobs.The dance I consider my best. Usable both for nondancing crowds, and with regular contra groups.
I wrote it after attending a contra dance with a number of beginners that kept breaking down over and over and over. On the way back, I thought what would have worked (a dance that intentionally broke down each time), and came up with a dance that I kept refining and simplifying down to this. It was partly also inspired by Ted Sannella's "Ted's Solo Mixer" and the scatter mixer "Set a' Crochet."
The dance's name came from ideas of planetary system formation, where larger and larger chunks of matter spiral inwards from gravity, accreting to form planetisemals, and then planets. The analogy goes bad where everybody separates every thirty seconds, but you could just consider that a periodic supernova event.
After having danced this, the A1/A2 feels sort of like the rush of looking for a partner, though here the commitment's only for 20 seconds. Kind of reminiscent of the cabeceo of tango.
by: Yoyo Zhou
introduces moves: allemande, balance the ring, California twirl
formation: improper
A1  16  neighbors balance & swing

A2  8  gentlespoons allemande left 1½

8  partners do si do once
 
B1  16  partners balance & swing

B2  8  circle left 3 places

4  balance the ring
 
4  partners California twirl to progress

by: Seth Tepfer
introduces moves: Rory O'More, pass through
formation: improper
Starts in short waves, right hand to neighbors
A1  8  balance & Rory O'More right

8  balance & Rory O'More left
 
A2  16  neighbors balance & swing

B1  8  ladles allemande right 1½

8  partners swing
 
B2  6  circle left 3 places

2  pass through ⁋
 
8  next neighbors do si do 1¼ to short waves

Based on Apples and Chocolate by Sue Rosen
by: Chart Guthrie
introduces moves: hey
formation: improper
A1  16  neighbors balance & swing

A2  8  ladles chain

8  ladles start a half hey  rights in center, lefts on ends
 
B1  16  partners balance & swing

B2  8  ladles chain

8  ladles start a half hey  rights in center, lefts on ends to new neighbor ⁋

by: Yoyo Zhou
introduces moves: slice, down the hall, up the hall
formation: Becket
A1  8  slice left and straight back ⁋

8  ladles chain
 
A2  8  ladles allemande right once

8  neighbors swing
 
B1  8  down the hall and turn as a couple

8  up the hall and bend into a ring
 
B2  8  circle left 3 places

8  partners swing

waltz & break
by: Don Flaherty
introduces moves: petronella
formation: improper
A1  8  balance & petronella

8  balance & petronella
 
A2  4  balance the ring

12  neighbors swing
 
B1  8  ladles gyre 1½

8  partners swing
 
B2  8  circle left 3 places

4  partners balance
 
4  partners California twirl ⁋

by: Maia McCormick
formation: improper
A1  8  long lines forward & back ⁋

8  neighbors swing (this is a new neighbor)
 
A2  8  ladles chain

8  ladles start a half hey  rights in center, lefts on ends
 
B1  16  partners balance & swing

B2  8  gentlespoons allemande left 1½

8  neighbors swing (the one you already swung)

Written for a workshop at YDW '17 to practice communication with neighbors.
by: Lindsey Dono
introduces moves: box circulate
formation: improper
A1  8  star right 4 places

8  neighbors allemande right 1½
 
A2  8  balance & box circulate  gentlespoons cross while ladles loop right

8  balance & box circulate  ladles cross while gentlespoons loop right
 
B1  8  balance & box circulate  gentlespoons cross while ladles loop right

8  partners swing
 
B2  8  ladles chain

8  star left 4 places ⁋

by: Jacqui Grennan
introduces moves: zig zag
formation: Becket
A1  8  slice left and straight back ⁋

8  ladles allemande left 1½
 
A2  16  neighbors balance & swing

B1  6  circle left 3 places

6  neighbors zig left zag right
 
4  shadows allemande left once
 
B2  16  partners balance & swing

The timing is fuzzy in the B1 but it does all fit.