Always curious Mister P. asked how I made the Mentos drop in to the soda bottles. I promised that I woudl draw him a picture. A day late, but here's how I did it.

The trick is to keep the mentos above the soda until you want it to explode. First you drill a hole in the cap of the soda cap. The larger the whole the bigger the stream that comes out, the small the whole, the longer the stream lasts.

Then drill a hole through the center of each mentos wide enough to fit a paper clip through. Feed the paper clip through the cap, then the mentos. Next, bend the end of the paper clip slightly to prevent the mentos from slipping off, but not too much that you can't pull it out.

Carefully screw on the cap/mentos to the full soda bottle and you are ready for action.

Once you pull the paper clip out, move out of the way.

I didn't invent this method. I read about it somewhere, but I don't remember where.