Have never bought DS stuff for sake of it, although have tried him out with different things, some not terribly successfully (e.g. dolls house only sporadically played with, balance bike not much used).
He loves Lego. And more lego. And some playmobil and dressing up. He's just getting into slightly more complicated board games. He has his own proper camera (DH researched, and found an underwater one, which is tough enough to stand up to the inevitable bumps, but takes decent pictures).
Things that I have on my possible gift list include a grow your own butterfly kit, Catan junior board game, Labyrinth game, Enchanted forest game, Swingball, Pretend play school/post office set, Aladine story kit (pirates, but they make others), fishing rod. When he gets older we'll be thinking about a telescope.
My rule of thumb is to go for things that DH and I will enjoy playing with him. So we're both happy to get down and keep him company while he plays with Lego or Playmobil, board games, etc. My favourite lego sets are the creator 3 in 1 ones and the Brickmaster books (we have pirates and castle, which are great).
Meglet where are you getting the lego table from please?