I have three boys, so it's always a challenge trying to come up with a new present for my youngest. Here are some ideas I've come up with in the past year. FWIW, my youngest is 4, and all of these were hits when he turned 3 one year ago or at Christmas:
an aquaplay set
Martian Matter Alien Maker playset (huge hit with all three boys, though may be better closer to 3 1/2)
Bruder trucks (bought at rummage sales and TJ Maxx/Marshalls)
Hess trucks (this may be an East Coast thing, though)
any Playmobil
any Lego (he has transitioned to from Duplos to regular Legos in the past year)
small RC car/truck (his oldest brother has a very fancy RC truck)
Play-doh sets (he wants the dentist set for Christmas)
Team Umizoomi fan club backpack and activity sets
I'll add to the list if I can think of anything else.
Tara
living a crazy life with 3 boys
I am thinking now
of grief, and of getting past it;
I feel my boots
trying to leave the ground,
I feel my heart
pumping hard. I want
to think again of dangerous and noble things.
I want to be light and frolicsome.
I want to be improbable beautiful and afraid of nothing,
as though I had wings.
~Mary Oliver