Heres an idea....once us girls had grown out of our swing my Dad grabbed it quick and put netting down three sides. His crop gives four whole families (Him, me and my sisters) so many beans they cannot keep up! By only growing up three sides you can get inside to the beans on the inside too. Keep an eye out on freecycle or ebay for 2nd hand swings - it wont matter too much what state they are in after all.

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God made rainy days so gardeners could get the housework done

You can bury a lot of troubles digging in the dirt

When my kids become wild and unruly, I use a nice, safe playpen. When they're finished, I climb out

You will always be your child's favorite toy