disabled dog enrichment

Hi all! I currently own a 12 year old pug. She has zero feeling in her back legs now (shes been losing feeling for years). Vet says it happens and theres nothing to do about it. I’m curious if anybody has any enrichment ideas for her? she can’t go on walks as… well she drags herself. She has a wheelchair, however she hates using it. She also had a “drag bag” to assure she doesnt hurt her legs outside on sticks or rocks. Shes not a huge fan of toys either (except squeaking toys, she breaks the squeaker within minutes). Sorry if this is long, I’m just curious if anyone else with an elderly disabled dog has any recommendations to keep her life exciting and stimulating?