I ordered a batch of white jampot lids for this purpose to do flowerpots for a wedding. I needed 120 but 20 x 63mm cost £4.35. (20 x 2.5 " = $5.30. )

I have never seen any plastic pot saucers smaller than 4" diameter....even from wholesalers. If I have a lot of smallish sized pots, I just group them together in a larger saucer. And with the right source you can actually find rectangular ones, useful when placing on a windowsill.

Curtis Wagner Plastics

My go-to is yard sales, Goodwill or other thrift stores and to collect used dish saucers. Getting a bit harder to find these days as cups and saucers have given way to mugs but you can still find them and get a passel full of used saucers for next to nothing. Nothing fancy but they keep damp pot bottoms from marking woodwork.

You might find some at Amazon.com. They have 2.5" bamboo ones but I am not sure how those would hold up. They come in a set of six for around $10 if my memory is correct. They do have 3.15" plastic ones there that might work for you.

The smallest I've ever seen in local stores are the 4" and 6" ones.

Here's one I found at Amazon:

3.1" plastic plant pot saucers

GG, some are cactus which I really don't want to share water (different needs) in tiny pots, because they're just tiny :) Yeah, I can't seem to find stuff like that anymore here, seems people have jumped on it..and everything old is 'antique' and expensive.

Dawn, you did better than me, I failed to find anything smaller than 4. I'll take a look.

Since you don't want any of your indoor plants sitting around in a saucer of water - it should get dumped immediately - it really doesn't matter if they don't share watering needs. In fact, it's my collection of succulents in small pots that I typically will group together in a larger saucer.

True, but I'm lazy and I prefer to (usually) water just till water comes though. I occasionally flush though and empty. (I admit laziness freely). On a few things I do practice proper vigilance and empty the saucers :)

This is what I used for 120 wedding favour plants. https://www.thebottlejarstore.co.uk/product/63mm-white-twist-off-lid/

I have $18 in my amazon shopping cart. I am trying to figure out what to spend 7 more on to get free shipping! :)

Some Peters plant food is never a bad option...Ordered. Thank you all.

I agree with Karen. Try to recycle or use what’s available to you. I use fast food containers (not styrofoam), plastic container lids, etc.

Also, Dollar Tree or a Dollar store. I get window sill sized trays for....a dollar, LOL. They sell the plastic plates where ever you can get paper plates. Yogurt, cottage cheese, lots of things have lids that will protect but will be very shallow. I suspect a restaurant supply store would have options. There is one just west of Memorial on 11th in Tulsa. Once upon a time it was the "Farm Store", complete with the resident cat and bags of rabbit poo for the garden. I loved that place.

Dollar 4/$1

Dollar tree