Product review (5 stars): Worked for watermelon!
We used this to make a watermelon jug. I love that the spout is metal and durable. It was very easy to cut out the watermelon out and get the spout to fit (with just using a knife, not drill bits).

Easy to use pieces. It didn't leak.

The space for the "jug" isn't super wide. For the watermelon, I had to cut into part of the rind to thin it out a little