Engineering (robotics, aeronautics, etc) kits you've always wanted!

Well, the story is like so:

The robotics league (which I am president of, hoorah!) within the pre-engineering club (which I am president of, hoorah!) in my school is giving me moolah, dinero and a great opportunity to order anything online thats engineering based that I’m interested in to mess with during now and the summer (so it becomes mine, basically).

What would you recommend? Theres nothing more I love than rocket science, hovercrafts, robots, woodworks, electronics and basically anything I can spend hours on just building.

Go wild! The sky’s the limit (but please, a fairly small price per kit is good, so I can order more).

Thanks!
el laminator