Bangles. As in bracelets, not the 70s girl group.

Singing. He will dictate to me what I'm singing "Wiggles snake not touch" or "Wiggles toot toot chugga chugga car" or "Wiggles monkey man" or "no Mammy, no sing now." OK he does let me do normal nursery rhymes, but he mostly wants Wiggles atm.

Cars, trains, planes... any vehicle really.

Cats. He adores them and they don't him. But he gets to pet one often enough for him to chase any cat he sees, meowing at it.

DS loves naming noses. He hits your nose, says "Mammy nose" (or whosoever's nose) then runs off again. Very random timings too.

In the winter, "moon and stars". He loves astronomy stuff. But it's too light in the summer for him to enjoy it.