I don't think that can be done. For wooden items small slabs under the feet is all I've ever been able to think of.
If you are using metal ones just use them on dry ground and move them after use.

Carpet coasters--those plastic disks that go under furniture legs indoors? Or does no one make those anymore?

Put a ceramic floor tile under each leg - you can get plain or gaudy with them.

the plastic coasters are clear and available in different sizes in B&Q.

Wow, never seen clear ones!

The legs would slide off of the coasters when someone grabs the chair to sit in it or to adjust their seating and ceramic floor tile will surely crack the moment a porker sits in the chair. This is one on the functions of patios and there is no escaping it.

My entire kitchen floor is ceramic tile. I'm no porker by a long shot, but my stove, granite counter & refrigerator can't crack them. They should be embedded into the ground, not merely resting on the surface.

I'd use castor cups & glue them to the feet. You can get them in all kinds of finishes plastic, metal, brass, wood & colours. They come in different diametres too from B & Q, Ebay etc
Run a Google search to see the choices.

Bath, is your kitchen floor base moist earth with overlying grass or something of firmer stuff such as a cement slab or wood strip with a ply overlay? If it is the latter, of course tile won't crack. If it is the former, of course it will crack.

Loose - Have you been to The Home Depot lately? Lowes? Ceramic tiles are widely used today for this purpose. Be sure it's floor grade. Go check around. Modern materials used make this possible - it's not like the 'old days.'

This might interest you:

https://www.pinterest.com/explore/patio-tiles/

These tiles still must be set on a prepared substrate like what the Romans did in the old days:) What will work for a lawn are the rubber or flexible plastic tiles used for garage floors either single under each leg or a small interlocked square.

You can buy heavy duty plastic grids that you can put down and your grass grows through it. You can park a car on it so no problem parking a backside.

That's the ticket!!!

We are having a solar eclipse tomorrow. Loose are you in the 'field of totality'?

No Bath, I'll probably be taking my afternoon nap during most of it. At least I won't have to pull the shades down.

I definitely will be waiting for it, hopefully take a few pics.

I might go out and stand under a tree. It's only partial here, and the gaps between the leaves will act as multiple pinhole cameras. I noticed the same effect when an annular eclipse went through Arizona in 1994.

Search for a "universal bigfoot". These are wide plastic feet that slip onto the end of tubular garden furniture legs to stop you sinking. Several brands around, I think they all do the same thing. There are more expensive angled and swivel ones for the fancier chairs.

After almost three years Bev an answer that just might be workable. Are you still there? It appears that your question was the only activity you had on GOY.

Frisket, I could only find Universal Bigfoot in UK. Are they available in US?