Thanks for all the responses! There are some great ideas in here. I never would have thought of the ice tray or the storage cups on my own.

I bought some flax seeds this weekend, but ended up having company over and ran out of time to try out a recipe. I'm hoping to tackle this project next weekend!
2b/c, high density
fine, medium porosity, normal elasticity
loves protein, hates polyquats
still searching for HGs