Upcycling concrete slabs- looking for ideas.

Hi, I have ~15 5’x10’ rebar reinforced concrete slabs available.  4” thick.  Trying to upcycle before contractor hauls them away.  Looking for ideas.  Thinking about using them for 3pt machinery pads, firewood pad, or perhaps walls for a small pig sty, etc.  but I’m sure there are more creative people than myself.  All ideas appreciated.

Buried 2 ft in the ground and sticking 3 ft up they'd make an awesome base for a chicken coop and run! Keeping vermin out of chicken areas is always a struggle in my ecosystem!
Yes, I wish I had several of them for 3 point hitch attachments, particularly our back hoe. Hubby keeps leaving it in places that are a nuisance to mow around. I'd get the chickens to mow it, but they'd leave deposits all over it...

Can you cut them up at all? If so, they'd also make great *really* raised bed. My raised beds are more like "an edge supported hugel", and are 30" tall. This is great for me now that I'm on the upper side of 60 and just can't do the kind of kneeling I used to be able to do.

Cut into narrower sections, they'd make great retaining walls.

Could they be made into walls for a big water tank? Probably easier if you choose a size or configuration that allowed you to use a food-safe liner of some sort.

Ideas might be more pertinent if we had some idea of your land, needs and goals!

Those would make a great walkway for an area that floods.

Our barn has a dirt floor so if those were mine I would love to have them to make a barn floor.

We used gravel as a floor for our rainwater catchment tank though those slabs would have come in handy.

Those slabs would make a great floor for a well house to hold the pressure tank.

They would make a great floor for a storage shed.

With 15 of them, I'd also put my chicken & duck housing on them (seriously - so much easier to clean up after them & protect them from digging predators!), line a couple up, side by side, and use as a level base, for an outdoor kitchen, set up an outdoor workshop on a couple, maybe a patio, dig a hole, and line it with some, to build a root cellar...

Multi section compost bin?