You probably already have lots of things that could be lots of fun…Washing up bowl filled with bath bubbles and a couple of cups/ladles etc, bubbles, a soft football. We have a small slide and horse rocker thing that we got free on Facebook a few years ago for our eldest which he enjoys but I probably wouldn’t bother spending £££ on them. We also have a water/sand table but find it a bit of pain to keep clean until we’re out there every day. One of my eldest (5) most played with toys is an old paint brush dipped in water for mark making on the ground/fences. She still loves it!
My boy loves his little tikes car (they do girly ones too) and he has a seesaw which he loves. He has a balance bike which he is just starting to use as well
We have a water and sand table and she loves this!