AvoBoat for one Avocado Seed

This object floats on the water and holds one avocado seed.

Version for 3 seeds: https://www.thingiverse.com/thing:4774162

To grow them roots, they should be wet from the bottom and dry from the top.

If you grow avocados the traditional way, you put toothpicks in the seed and try to balance it on the edge of a water filled glas. Since the water evaporates you have to refill it to keep the seed in the water.
You will never have this issue with a floating boat. if the water evaporates, the boat sinks with the water level and therefore the seed is always watered perfect.

Depending on the weight of the seeds you have the possibility to put small stones on the boat to make it float on the best waterlevel for the seeds.