Alligators for your lawn from recycled tires
Recycled Tires Pond - you could make it look like a T-rex foot print if you have kids or grandkids!
Maybe on a smaller scale to use as a fish pond for aquaponic system. May bury it a foot or so in the ground as well...
Things That Will Change and Improve Your Life Forever... (except I wouldn't do the drinking at the beach one :)