It depends on what you are using for the I Spy. If I am making it for a baby shower then I will use the baby style fabric and if the child is 2 years of age I use the Sesame Street things and the items aimed at that age group. But when I made them for my niece and nephew that were turning 4 and I used the Disney items, including the Disney Avengers and Star Wars. When it is for little ones I try to have 2 of everything so they can play the matching game - not so for the older one. But kids of all ages love them. What style are you thinking of using?