How do I start making a custom inventory? [closed]

Well, here are the things to consider:

1) Will you continue using the Backpacks? 2) How do you want the inventory to look? 3) Will there be anything specific or special about it?

The most common thing seems to be a grid of thumbnails, and sometimes you are able to scroll through them.

You can create a scrolling gui by making a frame, and setting ClipsDecendants to true. Then, add your grid of images inside, and code some arrows to slide the grid up and down. Don't worry about it going outside the frame, and it lagging up, etc. because it won't.

Also, when you are setting up a grid, most people have trouble making the boxes "hop down" a row.

This is the easiest way I've found to make a grid (in my opinion). Do a for loop to create the buttons, and when setting the position property, use a mathematical algorithms. The one you must use will depend fully on what dimensions you want your grid.