Elfa shelving and clear storage boxes. Also, a few baskets/cloth cubes for balls and soft toys. You can color code the baskets for each kid, so that toys that are age-specific (e.g., small Legos) are grouped separately.

You want things organized, but you want to encourage your kids to be able to see their toys so that they can help themselves.

Cube storage is the way to go, Costco even sells a good one for that. You could buy more than one to accomodate all of your children. The nice thing is that you can take out the storage box, play with the toys inside and then easily clean up and put them away.

You can order Ikea online, have it delivered, and even pay for someone to assemble pieces for you. If the play area is such a large space you may want to consider that you probably won't have enough space in your car to haul storage furniture from Ikea even if there was one relatively close.

Alternatively, you can google "preschool school furniture," and you'll find companies that specialize in storage furniture, e.g., :
https://www.schooloutfitters.com/catalog/default/mPath/MAN493

Check their company reviews, etc. but they can help you plan the space and set up what you need.

First, I would recommend that you try sending from somewhere other than your phone, or turn off autocorrect.

Second, cube storage shelves are ubiquitous and you can get them anywhere including Target, Home Depot, Lowe's, etc. Get a cube storage shelves (9 or 12 cubes) and then get bins that fit the shelves. Each bin can hold a different type of toy. So, one bin for Legos, one for cars/trucks, one for Dora dolls, one for coloring supplies, etc. You can get cloth, weave, plastic, wood bins as your taste and budget allow.

We recently moved into a house with a large, finished basement that we are using solely as an area for our 3 kids: ages 1, 4 and 6. Problem is that toys are exploding all over the place. I've thinned out a great deal of toys, but because of the age spread of the kids they are into a bunch of different stuff. Please recommend some creative and affordable toy storage solution. I kea is not enough shown as there is no IKEA within a reasonable distance. Looks are not terribly important sentence the only people who see this part of the house are the kids. Thx!!!