Given the level of advancement in this place, it's entirely possible a device that can do so on its own already exists, but even if not, I should be able to devise something on my own— once I have my magic back.

[He hasn't quite gotten around to that yet; he'd been postponing going into the tattoo parlor when Astarion had found him, and simply getting his powers back isn't as simple as he'd like it to be. He'd been stripped of them once before, and had regained a fair amount since then— but there's more brewing inside of him than just his usual suite of spells.]

Regardless, it should be manageable. Taste-wise, I'm not certain how it would hold up compared to what you may have become accustomed to in recent months, but... it would at least offer some variety.