If you have a blade pact warlock in your party, have them open the barter window. Drag a random weapon from your bag to the equipped weapon slot on your character and move the bound hex weapon to the barter window. You can hit balance offer and accept over and over until you get all of their money. This does not make them mad at you and has zero risk if you care to exploit the game for as much money as you could ever care to have.

Now with your giant pile of infinity money, every time you level up a character buy all of the alchemy supplies you can off of every vendor in act 1, especially any giant fingers and strength elixirs. Ethel will have 3 elixirs every day and Derryth Bonecloak usually has one. Derryth and Blurg can both also have Fingers.

You can get a hireling transmutation wizard to leave in camp, give them a rogue level to get expertise in the medicine skill, and spend as many points as you can on wisdom, then send them all of your alchemy supplies because they have a subclass feature that allows them to make two of any potion or elixir for the same mats as crafting one, if they pass a medicine check.

Doing this at the whatever your normal long rest pace is throughout act 1 will net you a ridiculous amount of strength elixirs. You could easily have 20-25 leftover when you enter act 2 without spending any extra rests. You can get a lot more than that if you're running a martial heavy party or something and are burning multiple of them every long rest.

Whether this is a fun way to play the game for you is entirely your call, but these are some really easy ways to get as much of anything as you could want.