The voice of experience here.
Get a labeler. Use flag labels on all the cords.
Put a label on every wall wart or mouse hole power supply.
Here is where things get tricky and if you don't watch out, things will get hurt. Some USB charged stuff needs a 2+amp supply to charge. If you connect it to a supply that is less capable, it may either:
A - Not charge at all OR
B - Burn out the supply. So you better know who needs what.
We put them all in snap close bags in a big container with snap lid.
I have lots of ways to do things and I still run out.
Matt