One of the memorable characters in Borderlands 3 is Moxxi, which you can find aboard Sanctuary 3 once you have made enough progress on the second planet. She will then run a bar/casino/house in one of the ship's wings. She can also be seen in her bar in Lectra City on Prometheus. She will offer you one or two secondary quests, and her bar includes potentially interesting services.
Tips and gratuities
On the counter of Moxxi's bar is a jar in which you can offer tips of 100 or 1000 dollars. When making donations, you will sometimes receive random weapons, but it is important to know that a unique weapon awaits you if you are generous enough. To do this, you will need to make a total of $30,000 in tips, only per $1,000 package ($100 tips do not count). You will eventually get a weapon with a bling bling bling appearance on it that says 'Moxxi'.
Slot Machines & Casinos
This other return feature allows you to spend your excess dollars or even erdium in exchange for very random rewards. We do not recommend using it outside of certain scripted quests and once the trophies related to them have been obtained. You'd better buy the inventory improvements from Marcus in the first place. But in the long run, at the maximum level, this will offer you the chance to get some interesting items including legendary weapons, but you will need to have a lot of dollars to burn. You should also know that you can win a grenade with the pin removed, for example, which is a relatively bad surprise.
Written by Robin "Raiden" Bouquet. Translated from French by Millenium.us.org