Mine like skineez, TY toys (especially the crinkly ones like the mouse and the hedgehog), Dr. Noys toys- the mini stuffed animal ones, they have like a duck and a bear, etc., they LOVE the little eggs that come with egg babies, sometimes I just buy bags of the refill eggs
If you have a TJ Maxx, Marshalls, or Home Goods by you that is a great place to get some toys because they always have great deals and you can try something and see if they like it.