​Toys toys and more toys

I’m a parent of 4 ranging from 2 y to 10 y. We have so many toys and 90% of them don’t get used at any time but they all get used at some point.

My idea is a toy library with a monthly subscription. Different tiers for the library get you more toys at a time and you can check toys in and out whenever you want but have a limit of how many are out at a time.

Any suggestions on this?