I recently discovered this new glitch. I made a video tutorial on how to do it.

Here is a step by step guide on how to do it as well:

1. Press '9' or click on the hammer to bring up the craft menu.
2. Put the items that you are using to craft into an item in the crafting menu.
3. Press the 'craft' button and press '9' at the same time.
4. This should give 3 or 2 invisible spaces in your inventory.
5. Now, right click on an inmate and then press on the 'gift' section.
6. Put any item in the gift menu, and then click out of the menu by clicking off of the menu.
7. Now, you should have the crafted item as well as the items required to craft the item.