One, here, has become rounded on the bottom, and won't stand at all.
With your idea---it will stand.
Thank you for sharing your idea.

That was my same problem. This fixed that! And looks much better I think!

What a simple yet brilliant idea. Something else to do when it stops raining. Save me keep going out picking it up. Well done suga.

That's a great idea. My MIL has a small one that keeps falling over. I'll have to fix that for her, using your brilliant idea. Thanks for sharing it. It also makes me feel better about changing the water in the birdbath. With the potted plants catching and benefiting from the excess, I don't have to feel like I'm wasting water.

Actually this idea works also very good for putting up the christmas tree. We do not use a plastic flower pot but an 25 litre zinc tub (our tree is at least 2 metre so you need some contra-weight). At the place you want the tree you add the tree to the tub first and fill up with cobble stones (or any other stone of course, as long as it fits between tree trunk and tub). After that there is no way a cat, child or dog will topple the tree. You can even add water to the tub. In case the tub is visible you can camouflage with a christmas cloth.

Ruud