I modeled in three 2mm holes on top of this great model, so i can hang it by a nylon thread to let it appear levitating. Obviously, you could also drill those afterwards, but i consider this a more sophisticated and also more durable solution. I used the model without drainage holes to not spoil my window sill. My plan is planting rocket salad, which in my eyes looks close enough to the original leaves ;)
As recomended in the original model, i would suggest using the "lay flat" option in your slicer and of course supports enabled.
Das Filament PLA
Remixed with Meshmixer by using Boolean Difference