Spray chalk!!! My kids could spend hours squirting this stuff! It's so easy and inexpensive to make. I bought 4 spray bottles from the dollar store, 2 boxes of corn starch and mixed it up last night.
Even the dog was entertained! LOL At first they would say "oops" but then it turned into an all out spray the dog event! Poor thing, she's such a sport!!!
I made 4 full bottles of spray chalk and it lasted for an hour with 3 kids and um, one adult!
The recipe is simple:
4T corn starch
1/2 cup water
I have large bottles so I did 4x the recipe for each bottle and picked the colors I wanted. I went through a box and a half of corn starch. You can adjust the spray stream to change the effect. I have the most beautiful driveway right now!