fickle notch
Get a lighthouse with good featherweight, around 30ish
Absorb the featherweight
Normally, leaving and coming back will reset your parchment's weight and thus you only get the negative weight benefit until reloading.
However, you can overflow containers and leave them this way
This has large implications using bookcases
twin carbon
that's pretty cool, not gonna lie
I got a gut feeling that's going to be the general attitude folks have to this exploit, too XD
empty fossil
enjoy while you can 
fickle notch
👀
Idk what I'll use it for if anything since I'd like to avoid using tobepatched exploits in my saves
empty fossil
i'm guessing a lot of players have used it for awhile now and didn't tell me 😉
fickle notch
https didn't think of overflow and he's been really keen, though you are probably right
fickle notch
[FIXED] [Returning Exploit] Weight Overflow Returns