The most loved "toy" for my kids (all between 16 mo and 2yrs) are ribbon wands that I made by attaching strands of ribbon to wooden teething rings. The kids use these during dance time. Usually they ask for them 2-3 times a day!
Building blocks and puzzles are also well used. Dolls with accessories like blankets, bottles, and stroller are loved by my girls and boy. Play kitchen and accessories is also a big winner.