Do what was mentioned above, get what you will play first. I broke down and bought my 3 year granddaughter a hot shots pinball to call her own. She loves to play it and it's so simple that she has a good idea how to play with little effort. Now I have 2 granddaughters and they know that its there pin.
This pin is super cheap and all the art work is kid friendly. You collection is going to grow, might as well get them something if money and space will allow. There are a few pins out there that young kids really grab into. Good luck and enjoy.