This site has a bunch of fantastic DIY carnival games and activities... including this simple GUESSING BOOTH.
Target golf game. Use for Art Olympics or Review games - holes are worth certain points, can color them primary/secondary/tertiary and make a point value...Easy to make, lots of fun.
Boys Circus Themed Birthday Party Can Toss Game Ideas
Set up cups or jars, and if your guests throw a ping pong ball into one, they win!
Circus + Carnival Extravaganza Birthday Party - Kara's Party Ideas - The Place for All Things Party
Running out of ideas to keep the kids entertained this summer? Why not try these Squirt Gun Races?!
Homemade carnival game. Very easy, very cheap !! …
Prize Board Get the kids excited about the games by showing off a board filled with fun prizes!
Carnival Party ~ Marble Race ~ made with cut pool noodles, box wrapped in wrapping paper, two marbles - Crafting By Holiday
This site has a bunch of fantastic DIY carnival games and activities... including this bean bag toss made from $1 plastic bowls.