For Ezven's 4th birthday we did a rocket theme. I created rocket pieces on my computer so I could print, cut out and glue together fun decorations for the party. I was going to use them as an activity for the party (using the ones I made as inspiration) but the kids were having so much fun just playing around the house together, I didn't really need it. Now the elements are for sale in my esty shop! You buy the pdf file and I email it to you so you can make your own cool rockets. They are fun to make out of paper but you could use the shapes to make rockets out of other stuff; use them as applique on quilts, as stencils to paint on the wall or out of felt to just play with!
http://www.etsy.com/listing/67625472/rocket-building-kit