I am currently in the middle of planning my oldest daughter's 5th birthday - more on that soon I promise. But since I'm so swamped with that right now, I thought I would share last year's invites with you. Since she was turning four and loves golf, we went with a golf theme - FORE! We held it at a local indoor (key to a successful April birthday in Connecticut) putt-putt place. The colors were yellow and purple (and green obviously!) I will post about the overall party at some point, but in the meantime you can enjoy the invitation.
I used astroturf and sand paper for the base of the invite. I printed the actual invitation on green cardstock and cut to fit. For the flag, I just used some of my kids construction paper and drew on the number four with purple marker and outlined it with a fine-tip Sharpie. Glue on a toothpick followed by the flag and there you go!