Thanks for all of your ideas!!! This is my first contribution. I hope you have fun with it. My Thursday morning class loves challenging choreography!
Step is horizontal, start with your right lead. All combos are self-reversing.
*Diagonal shuffle: Start with a diagonal across the top but don't exit your board (1,2), shuffle (3&4) (right leg is on the floor, left leg stays on top of the board), march on top of board 2 counts (5,6), straddle your board (7,8)
**Merry-go round: Start with a turnstep (1,2) but don't tap down, instead end up on the left hand side of your board (3,4) and march twice (5,6) When I put two merry go rounds together I have the members take the march into a walk to the other side of the board and go right to another turnstep.
***Flashdance: Right heel, left toe, right heel, left toe (there is a bit of a hopping motion)