I saw some other floating pot plants and thought they were awesome. I've gone and designed one myself. This one has a series of 6 holes in the bottom with an irrigation ring around the base. So make sure to check the ring for the water level when watering.

Print with low infill to keep it lightweight. Mine has no trouble levitating with 8% infill and three layers wall thickness. I usually like to go three walls when water is involved. You'll need supports for the magnet hole. Set your support angle to 80 degrees so that your slicing software will only generate support in the magnet hole and not in the irrigation holes (would be very difficult to remove).

Suits a 50mm X 10mm magnet. This is the kit I used:
http://s.click.aliexpress.com/e/NQV9sRb2

Enjoy!

Anycubic

All-metal Mega

No

Yes

.15

8