I found this free image online to make the invitations.
I found a free printable set at We Heart Parties for signs and decorations.
I used the cupcake toppers to make a different banner. I found more game signs at Mama Bub Blog and matching blank signs online for other games. The games we had were a pool noodle ring toss, pin-the-nose-on-the-clown, two bean bag tosses, a marshmallow toss, and nerf gun target shooting (unfortunately, in my haste, I forgot the bowling game and circus tent). The kids earned tickets they could redeem for dollar-store prizes.
There was a photo booth too with lots of fun props, and classic American folk and kids' songs playing in the background.
I dressed up in my new clown costume ("Raggedy Fran") and painted the kids' faces.
Once the kids lost interest in the stations, we snacked on popcorn, chips, cupcakes, and apple juice.
I had planned to tell everyone it was my birthday at the end, but my friend surprised me with a candle in one of the cupcakes, which I stuffed into my mouth whole to everyone's astonishment.
We played some more party games--hot potato, red-light green-light, and tag--and ended with balloon animals, or more like a huge balloon-sword fight.
Everyone had a lot of fun, which means it was a success in my book!