I just came across this list with a ton of ideas at OneGoodThing for using 3% hydrogen peroxide! There are some really wonderful tips like removing that baked on gunk from pans and cookie sheets (you know that residue from things like cooking spray and oil), to getting out stains from clothing, tablecloths, and curtains to warding off fungus from indoor plants. And there is even a tip that says 1T. to 1/2 cup of water (rinsed in & drained) on leftover salad will help prevent wilting!
Think how much money some of these tips might save you! I can vouch for the stain removal as I learned as a maid working at a motel how well it removes blood stains and the color red in general.
This is an excellent list with some really frugal uses so head over and give it a look!
Till Later!! :)