Another simple target idea we usually employ is to take the cheapest generic 5 lb. bags of bleached wheat flour (i.e. white flour) you can find and wrap it in one layer of duct tape. Then drape a sturdy piece of string a few feet long over the top and wrap again in one more layer covering over the section of string. Tie the two ends of the string together and you have a loop to hang the bag of flour from. We use steel flower pot stakes curved at the top to hang the bag of flour on. Every time you hit it you will know because there will be a puff of white powder. For .38 special it will last for about 50-100 rounds. Much easier to see you have a hit compared to paper targets.
For more fun, slit the top of the flour bag, remove a little flour, and maneuver a container of Tannerite to the bottom. Then mark the bag of flour on the outside with a sticker or marker where the Tannerite is in the bag. Use the least amount of duct tape to secure a loop to the bag. Hang it. Shoot it. Watch a big plume of white powder.
John
Scoundrel and Ne'er-Do-Well in Training