I find with my rabbits that many toys/chews don't interest them but in a larger size they will. For example, if I offer them a small branch to chew, it's not popular, but the same kind in a giant size will be a hit. The same with some of the pet store bought things --- what's rated for rabbits is often too puny. It's maybe only meant for the dwarf breeds (I'm thinking tunnels, mats, grass balls, hidey houses, etc.)

it's not like rabbits come from a miniature world after all.... (btw, I'm not talking about the BB store but Petsmart and places like that)

Guess it depends on your rabbits play style what they prefer. I do agree for chewing they go for bigger things. I find the most stationary things are popular as they can really get their teeth into them. I keep meaning to make them a Chew Station for the bunny area. Thought I'd fix safe chew branches etc onto a peice of board. I've been slack though, and chances are they'll still go chew other things about the house and just pee on the new thing in their area. *roll eyes*.