With the warm weather slowly creeping back it’s time to think of warm summer days, and with that comes this rather interesting leak-proof water… blob?

[Leisha] over at Homemade Toast has come up with a super inexpensive way to make a water blob  — or a giant outdoor waterbed? It certainly looks cool, and apparently keeps children entertained for hours playing on it. We wonder how bouncy you could make one for bigger kids (i.e. us).

It’s made out of a roll of painter’s plastic drop sheet, and instead of trying to tape, glue or otherwise seal the edges, [Leisha’s] figured out an easy way to melt the seams together using a clothes iron. By sandwiching parchment paper over the two pieces of plastic, you can gently run the iron along the edge, creating a very strong bond, without melting a hole in the plastic.

Seriously — we want to see someone make a giant version of this for some extreme waterbed bouncing!

[via Viral Nova]