If mosquitoes find you delicious, this gadget can help you find relief. Apparently, holding its heat source over the bite "helps neutralise the insect-injected proteins that cause itching and swelling."
Something tells me that good old scratching is still the best medicine—that and avoiding bananas. I seem to recall Mr. Wizard saying something about how mosquitoes love banana-scented blood or something. If that isn't true, Mr. Wizard has screwed me out of a whole lot of tasty summer treats over the years. [Improvements via 7Gadgets via OhGizmo]