My TV only has one RCA input, but I have 4 devices that use RCA. I didn't want to buy parts to build a switch box or buy one, so I came up with this. It is a really easy project to do, it was free for me because I had the spare parts laying around, and it took me about 20 minutes.
NOTE: Turning on more than one device at a time might cause problems, I'm not responsible if anything gets ruined. I doubt it would cause problems, but I wouldn't try it.
Step 1: Materials
-Spare RCA cables
-wire cutters/ wire strippers