HELP! My baby turns 2 on Saturday and I am at a loss as to what to buy him.

He has an older brother so they already have plenty of toys (cars, trucks, pram, dolls, blocks, duplo, thomas train set, view masters, etc), he doesn't watch DVDs yet and we have an assortment of bikes, ride-in cars, scooters and the like. DH and I are not big on clutter (I am constantly culling their little annoying plastic bits that grow in their toybox) and want to avoid any loud/clanging/buzzing stuff that needs batteries - we sound like kill joys, huh?? I thought of a fold out couch but as DH pointed out they have one as well as an armchair and bean bag. He is only two and is pretty simple - he likes cuddles, his monkey, his blanket and sucking his thumb. It's not like he has hobbies, IYKWIM!

So what do I buy a boy who has heaps and needs little? I want to give him SOMETHING, and not just put $$ in his bank account. HELP!