Double Up

Lets you wear a backpack and a fanny pack at the same time. The fanny pack gets its own slot (5).

Bags are also lighter: stuff inside a bag weighs 30% less and the bags themselves weigh half as much.

Hold a bag and right click to open it with your hotbar underneath, then drag items between the two. There's a drop box on the left if you want to throw something out.

Everyone in the lobby needs the mod or inventories will get messed up. Doesn't work with console players.

Weights can be changed in the config.