It is my struggle for sure too! My age range is similar to yours; the youngest (not as young as yours) just turned a year...oldest is 3. One thing they all can do is paint with food...I make up some pudding (vanilla ) & add food coloring. They all also like to do the shaker painting...you put rocks (anything that will make a rattle; I just find rocks are an easy wash after)...anyway, rocks, paint & paper in a Tupperware container (I tape the paper in the bottom) & they shake it to their hearts content...voila masterpiece. Also, they all love to stick stickers on pages (of course, the older ones can tear the backings off themselves, younger need some assistance). I really believe (& tell parents all the time in interview, it's all about the process for them). We do a craft once a week (like you they draw/color/stamp almost daily). The end results are not wow fantastic but they have a blast. I have a set of craft scissors that cut in patterns and often I will cut around their artwork to make it cute or add a magnet to the back.