the plastic nursery pots themselves, and strong glue. Glue a 2-inch deep saucer (right way up) on top of a large upturned planter. Alternatively, stack planters one atop another to make a taller post.

With hot glue, you can create the same effect, essentially making LRF for any pot that threatens to do ... works as well, as ...

The POTs' chaotropic effect reduces PVA crystallinity, enhancing polymer chain dynamics and conferring robust adhesive properties across a wide temperature range from −196 to 100 °C.