that same pool has been my chicken coop, compost pit, wood chip reservoir, compost tea brewer, egg making, FIRE ANT breeding, science project for the last few years. By filling the pool with free wood chips, I am now able to make all of my compost on site. It is a lot of labor to shovel the chips into a garbage can, haul the garbage can up the stairs of the pool, over to the screen sifter, and then sift out the bigger chunks. All of my food scraps go in the pool, all the yard trimmings from the property (I'm on 1/3 acre urban with no lawns), and pretty much anything organic I would otherwise throw away. I put hardware cloth over the domed area where the plastic for the greenhouse was. The compost tea is basically just rain water that the pool naturally collects and that I can pump out with a bilge in the deep end.
Tho it seems like an awfully big space for a wee bit of extra seasonal stuff. Maybe I could take it further and make a solar oven or something in it !