As part of Design Make Teach's TicTacChallenge, I design this little holders to convert our empty Tic Tac Containers into mini planters for some air plants (I'm also using them for succulents and some tacky looking grass as well). There is a hole in the back which I use to hang the planter on a mini suction cup. The air plants currently hang in my shower and succulents are hanging on my window sill.
I have been filling my planters with colorful aquarium stones. If that is not your aesthetic, you can also spray paint the Tic Tac Containers to make them a solid opaque color.
More of Design Make Teach and his Tic Tac Designs can be found at https://designmaketeach.com/2016/04/09/tic-tac-box-challenge/
I print this with the heart face down on the bed (and rely on bridging for the back support rail). You do want to make sure your bed leveling and Z End Stop and nicely calibrated so you have a nice finish on what will be the front of your piece.