Amazing find by Peregrinator9 on Reddit with a tip that Volo's Ersatz Eye can 'used" by right clicking on it your inventory. Using it gives your toon a +1 charisma, -1 Int buff until your next long rest. This buff does not have an icon so you will only see the stat updates on your character sheet. This will allow you to get to 20 Charism, 5E's stat max at level 4! At creation take any of the races with +2 Cha (all half-elves and tieflings) then max cha at 17. Then use the eye buff for 18 and choose +2 cha at level 4 for 20 total! 20 Cha will give your Cha based spells +5 to hit and your eldritch blasts 1D10+5 to damage if you take agonizing blast at level 2. Currently sorcerers are the only class in game using Cha as a casting stat but that will change when other classes get added.
You can get the Ersatz Eye in one of two ways. One letting Volo gouge your real eye out in camp trying to remove the tadpole, or two pick pocketing it off him. The first opportunity to steal it is at the Druids Grove. The first time you enter the circle Volo is there talking to a bear. If you have one toon talk to the bear and turn its field of vision away from Volo you can then have another char hide and pickpocket Volo. You can also pickpocket Volo in your camp after you rescue him from the goblins. Volo never offers the eye for sale.
Volo is also a decent merchant but he never has a trade dialogue option. You can force the trade window open when speaking with him by clicking the trade button in the lower left of the UI. Almost all non hostile NPCs in game will trade with you by doing this but most have little to nothing to trade. If you trade with Volo in the Druids grove before he leaves he has decent gold, a nice clerics ring, some scrolls and 5 animal speaking potions. When he is in your camp he can be used like any other in game merchant and his supply of gold and animal speaking potions restocks after every long rest.