I used to get ads for art auctions that had wonderful little miniature reproductions of the art that was up for sale, and I always thought how nice they would be to put on dollhouse walls. I think there were carpets, too. I thought I would mention it in case your mom should be interested. Of course some of the art would be, er, wonderfully unsuitable ;-) Even odder than the cigar-box ladies on Arrietty's ceiling in the Borrowers.
Re dollhouse stuff
Helen