Mosquito Tag
My sister helped invent this one. The principles are exactly like normal tag, except the person who is "it" needs to buzz loudly while holding two fingers up behind their head, representing antennae. Their tagging arm should be held straight out with fingers fashioned into a point. As with real mosquitoes, it is of course only possible to tag on exposed skin.
note: Please spare a thought of sympathy for the sister's then-boyfriend, who lay in hospital with malaria at the time of this game's conception. But don't worry; to my knowledge, he's alright now, and I'm pretty sure he didn't have the kind that keeps recurring.