I printed in PLA
Check other Valentine keychains
https://www.printables.com/model/1162970-my-sexy-valentine-keychain
https://www.printables.com/model/1169351-i-love-you-soundwave-keychain-1
https://www.printables.com/model/1175739-i-love-you-soundwave-keychain-2
https://www.printables.com/model/1151613-pixel-heart-keychain-valentines-day-remix
https://www.printables.com/model/1175739-i-love-you-soundwave-keychain-2
https://www.printables.com/model/1178218-dice-hearts-keychain-version-available-remix/files
If you like my work consider
The author remixed this model.
Create a base and made into keychain