I have a 27 month old boy who is also VERY busy! I feel the same way as you...there is nothing really jumping out at us.
He is getting more and more into trains now. We had just bought a cheap Ikea set and he loves to build the track with help. But now he knows Thomas and likes some of the fancier features like bridges and things. I have gone to Micheals with the coupons from the paper and have bought these additions to our track.
He also loves cars and trucks, but we have SO many. I am getting a few more of the Cars characters, since he knows the characters now.
His absolute love are tractors and farm things. We found some really cute John Deere farm sets at Fleet Farm. Instead of a doll house and dolls, he'll be getting a barn, tractors and farm animals! He's really getting into the imaginitive play with those sorts of things.
He really enjoys his Little People garage as well.
From family we've asked for passes to play areas, the zoo, and the Children's Museum.
I know kids love those small indoor trampolines, but I'm also aware of how many fractures kids get from these things. Still, I'd rather have a child jump on that than the furniture!
If you have the space, those indoor forts and tunnels can be fun.
Good luck!