Check out this clever mosquito repellent diffuser refill hack. Instead of spending cold hard cash on chemical refills, use an orange peel instead. It does the same job, smells better, and involves less noxious chemicals. [via unplggd] Related Topics Adam Flaherty I make cool stuff and write about other people making cool stuff on makezine.com. If you have something you think I should see, send me a tip.