Creative Watermelon Ideas

I saw a webpage with creative food designs and I thought it might provide some ideas for hostel parties:
http://www.buzzfeed.com/lindseyweber/t-rex-fruit-salad-ru

(dinosaur fruit salad and watermelon brain)

One could even add some alcohol to the watermelon ;)

Here's the recipe for dinosaur watermelon.

Additional creative watermelon carving ideas here, here and here.