Hobbies And Interests
Coins
Add quarters, pennies, nickels and dimes to the list. To make this particularly hard, add other currency, like a Canadian Loonie, or add old antique coins to the list. And of course whoever finds the coin first gets to keep it.
Graffiti
Searching for graffiti makes for a good detective work. Check park benches and jungle gyms for scrawled love notes, "M+C," "(person's name) was here," "I heart (object)" or particular dates to make for an especially hard scavenger hunt.
People and Clothes
Nothing beats people watching, especially when you are participating in an odd and diverse scavenger hunt. To make a unique list, include people to find. For example, you could have the players find an elderly woman walking a dog, a mime, a laughing child, a couple holding hands, a biker smoking, a college student carrying a green backpack or a woman with a dog in her purse. Look for people in specific types of clothes, too. Add fun items like an 80's style crop-top, red leggings, army boots, a yellow headband, someone in camouflage, doggy clothes or a sports-themed baseball cap.
Park Amenities
A yellow slide, a sand castle, a swing, a patch of flowers, a group of rocks spelling out a name, a bathroom sign, a park rules sign, a teeter-totter, a climbing pole or a plastic game of X's and O's attached to the jungle gym are all common park amenities worth putting on your list.
Animals and Nature
A sunflower, a tree with names carved into it, an evergreen tree, a cat on a leash, a blue bird, a snowy tree, moss, animal tracks, a maple leaf, a cardinal, a blue jay, wild bunnies, a daisy with half its petals missing, a four-leaf-clover, a prickly plant and a cloud shaped like a dinosaur are all natural things that you could find in a park that could be added to your list.
Litter
While litter-bugs should not be praised, garbage does make for a good scavenger hunt selection. Search out old gum and soda wrappers or particular styles of plastic drinking bottles.