Snail and slug fence
thingiverse
There is an improved and better printing version of this thing here: https://www.thingiverse.com/thing:3216008 A simple fence that discourages snails and slugs - it's hard to slide over, faces outwards and interrupts the natural 'shortest path' to the food. Also has spikes on top for last line of discouragement. The wall is a fence rather than solid so that sunlight can still get to the plant. Printed with a brim because the thin mesh needs stability while printing. You can optionally leave it on afterwards and bury it in the soil for stable installation.
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