Pop Rivets.

I recently had to do a repair that needed a fairly special type of rivet and I didn't have a rivet gun. I got the rivet I needed and had to buy the tool to install the rivet. Needless to say the tool was cheaper if bought complete with a huge selection of assorted rivets.
 So, job done and lots of rivets to play with now.
The ironic thing is, there were none of the type of rivet I needed in the kit.
At least I got a Tiny Tuesday blip out of it all.
So thanks Incrediblish for hosting Tiny Tuesday.