A rabbits toenails can get stuck in the loops of a towel and the toenail could get ripped off.

Aspen shavings are actually ok unless your bunny has an allergy or issue with dust. Pine and cedar are the dangerous ones because they contain a natural oil found in the trees called phenol. Phenol can cause respiratory problems in small animals and rabbits. Aspen is a different kind of wood and doesn't contain these phenols so it's completely safe.

Hey is a good along with Yesterdaysnews and carefree. If you potty train your rabbit, you can have a box in the cage with a natural litter for her to potty in.