These are two sampleholders to collect and show samples of the filaments you own. The stems can be put onto keychains, so you can take it with you and show others as well. (Could be useful when someone asks you to make something and you can show him/her your available colors)

There are two stems, PLA and PETG, and each can hold 10 chips. The chips don't need support when printed upright. The stems can be printed without support, but they require some bridging.