My DH bought a tool box with real tools for DD3.5 -- she hastily rejects a toy that's not the real thing -- and she helps him do jobs around the house. Could be good for "fixing" strollers and other toys your child may have.
I recently purged our home of unused toys and I am trying stick to the basics. Little People are a big hit. Bristle blocks, Duplos, Tinker Toys (a big big hit), baby doll with stroller, blocks, basic art supplies, matchbox cars and playdoh. The play kitchen gets a lot of action, too.