I don't think that they make the rescue hero stuff any more and it was GREAT. I agree that the basic bat man, spider man etc may be best. My six year old is a power ranger fan but I am not sure they are near as popular any more. I would not do Star Wars. Both my boys were HUGE star wars fans by 4 because our family was. Many four year olds do not have a clue what Star Wars is and the figures are not quite a basic as some of the other ideas. If it's in the budget, I agree that a bag or container is great and if possible, include a book or two about the figures you choose. Sometimes under privileged kids are not turned on to reading very early and having a book about a new toy may help.