DD had that Little People Fairy set, too. She never played with it. She really hasn't played with stuffed animals up until just recently - and she pretty much just likes them to be on her bed. That's it.
Dolls - she sort of plays with them but it's only maybe once a week or so. I'm thinking she'll grow more into that.
The Little People Farm - she never played with that much, either.
ALL Little People sets - he had the farm, firehouse, airport and fun park, as well as the retro sets in the lunchbox-type containers. Every once in a while I'd find him driving some LP around in a car, and he'd fill the farm silo with random crap, but otherwise they went untouched. Fortunately, the ones I paid for I got crazy cheap on Black Friday deals.
Also, he loved his own train sets for about a month (Thomas Trackmaster) but you can't pull him away from the wooden ones in TRU and B&N or his cousin's house. Perhaps I made a poor choice there. He has recently started stringing them together again, though he won't put them on the tracks, so I decided not to box them up just yet.
Unfortunately, Wii. We bought it as our big family gift for the holidays, along with some kid games, and they have zero interest. I pretty much have lost interest trying to figure out the instructions. What a waste of $.
My 4 year olds actually love their Little People. I keep thinking they're too old but they still play with those.