How to make money on Fiverr by writing in the Sand

One interesting Fiverr gig I pulled out is a Fiverr seller who makes his Fiverr dollars by writing messages in the sand.

If you live near a beach, this is easy money for you. A total of $190 has been transacted so far for this Single gig alone.

http://fiverr.com/nathanshields/write-your-message-in-the-sand-on-a-tropical-beach-at-sunset

Now brainstorm other gigs that you could do in the sand?