Bottle Cries

OK. Weak title. I'm gearing up for my retro-D&D campaign tonight, and drawing inspiration from what they will encounter.

The Bottle of Light
This potion is generally found in a dark glass bottle, that allows it to shed its light without being uncomfortable. The liquid inside is as bright as sunlight, and in a tinted bottle will shed light as a Light  spell indefinitely. Aside from being a substitute for a torch, the potion has a number of other uses. If drunk, any curses, diseases, poisons and afflictions which are innately evil are immediately cured. Disease from a rat's bite won't be cured, but levels drained by wights will be restored. Also, it can be used as a grenade-like weapon, splashing over a 5' radius. The area will immediately be filled with sunlight, to a distance of up to 100 yards in open territory. Any undead, devil, demon or other creature deemed to be evil in essence touched by the liquid will take 3d6 points of damage immediately, and a further 1d6 each round until they scrape the liquid off of them. Alternately, a weapon could be coated with the light, causing it to deal an extra 1d6 damage with each hit against such creatures for 1 hour per dose.
Obviously, this is powerful stuff, and should be used sparingly.

Bottle of Darkness
This item is a clear glass bottle with certain arcane sigils on the stopper. If it is found full, it will seem to contain an inky black substance. If the bottle is opened and upended, it will fill the area with darkness as the spell of the same name. The darkness will remain until the spell's duration has expired, or until the stopper is replaced in the bottle and then removed again. In that case, the darkness will be taken back into the bottle, and the effect will recharge in 2d6 rounds.
If the darkness is not taken back before the spell expires, the bottle will be empty. An empty bottle of darkness can be used to dispel any magical darkness, by spending a round removing the stopper and turning the bottle upright. The bottle will them be full, and the darkness can be used again at will.