Ball or beanbag toss.sould use the sponge balls and have the buckets partly filled with water
Awesome 40+ Fun Outdoor Space For Your Kids https://kidmagz.com/40-fun-outdoor-space-for-your-kids/
Create this balance challenge with a path of cut logs in varying heights. Contact your local tree trimmer to see if he can donate scraps, or cut them yourself in heights ranging from 2” to 10”. Space the stumps far enough apart so kids have to carefully plot each step as they walk the path.
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River Rock Art ~ great idea for under bird feeders