Pog 

Quote from PollyNim >>

Aasimars can cast Light as a racial ability.  Do they still need the components to do so?  I'm guessing no, but is there an official verdict somewhere I can cite?

Technically they still do since otherwise it would say "without requiring material components", but 99.9% of DM's will be fine with handwaving that.

Tizzam's Guide To Not Getting Lost

Rather simple really, as cantrips go this is among the favorite and most basic any caster shall ever learn. But not many think of its creative uses. Behold, the golden light of magic sand. A cheaply acquired bag of sand is quite fine, one simply must enchant it with his light spell until the contents is fully enchanted. Then, merely leave a trail behind yourself as to not lose your way. For human casters in dark places, this is an incredible boon. In strong winds, such a thing can light up huge swaths of field. And in a quick pinch, and stirred properly with a silver tongue, one can convince many less scrupulous humanoid that it may very well be magical gold powder. Though I recommend finer sands or powdered quartz for the latter. 

And of course, this can be quite debilitating if one "fights dirty" when in use as what my associates have endearingly labeled "pocket sand, sha-sha!". When tossed into the eyes of an enemy, fine sand or powder so enchanted can induce near blindness for up to the length of the spell's duration. This application would be rather dubious in any fair combat, but very well may save your wizarding life, and so, may Mystra guide your journeys, friends!

Quick question I had one of my players use this against some shadows which can hide as a bonus action so my question is if the shadows were in the light would they have disadvantage on their dexterity check to hide or the players have advantage on perception checks to see them or would none of those happen

If I cast this on someone's glasses or eyepatch and they fail the save, could I potentially blind them because the bright light is next to their eye(s)

My Hafling sorcerer commissioned a simple leather bracelet with an inexpensive crystal attached to it so he could cast Light on the crystal and use it like a lantern while keeping his hands free.  A leather flap can be buttoned over the crystal if needed to obscure it (yeah I know that technically he can just end the spell and re-cast it, but the using the flap is easier and eliminates the need to speak the verbal component of the spell).

Fun idea and very cool looking. Similarly, my cleric gifted our monk with a quarterstaff with caps that screw on and off. I often cast light on the end of it and he can cover it when needed.

How does this affect magical darkness?

Quote from Cloudninja3077 >>

Quick question I had one of my players use this against some shadows which can hide as a bonus action so my question is if the shadows were in the light would they have disadvantage on their dexterity check to hide or the players have advantage on perception checks to see them or would none of those happen

If the dim light or darkness was the only thing providing concealment to the Shadows, I would rule that they stop being hidden as soon as there is bright light in their space.

Quote from I_Am_A_Catloaf >>

How does this affect magical darkness?

The Darkness spell will not just be unaffected by, but actively dispel any light-producing spell of 2nd level or lower that overlaps with it. Cantrips are level 0 spells, so that includes Light.

What about casting it on a sword, how bright would the sword shine?

Quote from Lambastard_13 >>

What about casting it on a sword, how bright would the sword shine?

D&D really only has two brightness settings: bright light and dim light. Regardless of what you cast it on, this spell causes the object to shine bright light in a 20-foot radius and dim light for 20 feet beyond that.

I wish to make Black-, Gray- or White-colored Light. Is this RAW allowed(No Crawford, please)?

Quote from MaedraDawnkeeper >>

I wish to make Black-, Gray- or White-colored Light. Is this RAW allowed(No Crawford, please)?

The description says "The light can be colored as you like".

That said, light can't be black or gray in general, so I'm not sure what that even would mean.

Can you use this on a rock or something and use it to flashbang people?