One part. Easy to print. Buy some LED corks. Buy some clear sticker labels.

Elixir labels: https://www.redbubble.com/i/sticker/3D-Elixir-Bottle-Label-by-alexaldridge/41244638.O9UDB?asc=u

Note: There are some imperfections found inside the bottle after printing that need to be removed with a knife and tweezers. The imperfections are very small and do not affect the finished bottle.