Re: OOC: Literally, Everything Else Ever
If you specifically animate an object to stay latched on to the side of your head and feed you a potion when you're ready to drink it, just buy a fucking potion bladder for like 50 gold out of Drow of the Underdark and get the exact same result without any of the fuss.
Could you also task it to automatically apply the potion to you when you fall unconscious? After all of that effort, I'd say yeah, you probably could.
Would having this thing attached to the side of your face and climbing around cause some sort of undesirable consequence, such as an armor check penalty, penalty to spot/listen, or taking up your actual face equipment slot? Maybe, though that is up to the DM.