At the risk of sounding cheesy...
Let's go fly a kite!!
The spring weather is gorgeous, and it's about time that you take advantage of it! No matter what age you are, you are never too old to fly a kite, pass a ball back and forth, play frisbee, or simply run around and just enjoy yourself!
It is never too late to be a kid again.
Do yourself a favor -- go outside, and have FUN!!!