I was experimenting with a magnifier lens to try to get a poor-man's macro setup. Here I'm using a 3X magnifier glass shown below, placed at the front of my 18-55mm lens, set to 55mm and focus manually dialed to nearest distance. Then it's just a matter of moving to and away from the subject to try to get something in focus.
The magnifier lens itself make the depth of field too shallow to actually get good focus, but with some experimentation and patience I think it's possible to get something good. This is just the first attempt, I'll try insects next.