My daughter got some clipo stuff for a birthday a few years ago, and it only got touched once. I don't think it holds their interst. On the other hand, I am a confirmed believer in legos. My kids have hada them from age 2 on, and they are now 28 25, 15 and 13, and they all love to play with them. I like toys they don't outgrow. and for the little ones, there are all kinds of big legos zoo's, and trains and stuff, that can get recycled as other things as the kids mature. With Lego's, be sure not to push your children past the age limits on the boxes. The lower limit is REAL. to move into the older aged "stuff" they need the fine motor movement, plus the ability to organize their projects, and it's not worth frustrating them by buying something that is more mature than they are.