Click-A-Bricks are recommended for ages 4 and up. But you know your child best so use the age as a guide line. I know my daughter would’ve been able to use these before she was 4 with some adult supervision. She is now 5 1/2 and able click together the bricks with no help. Most of the time she just wants to sit at the kitchen table and build her own creations. On her own.
The Rainforest Rascals kit is a great starter kit for the kid that loves rainforest animals and building blocks. They will be able to create several different animals or whatever they can imagine. In my opinion these are wonderful for encouraging creativity and imagination.