My four year old got a “bug viewer” for her birthday and it’s pretty cool. She’s only sort of into it (her friends are more into it). She loves the game “Spot it”. Her favorite toy (carries everywhere, twirls, drums with it, and would sleep with it if we didn’t stop her) is a handle from an old push toy that she refers to as “Drum stick”. I think a set of actual drum sticks would go over well. My older DD liked getting a set of Pom poms at this age. My older DD loved her play dollhouse at this age, the younger one is more into wooden train tracks (some) and magnatiles (a lot). Play tents and tunnels have also been a hit at a variety of ages.