Barrels 2012 makes things from TerraFirmaCraft wearable on the player's back, similar to how it was in the Classic mod (ie, in 2012). The following things are wearable:

Barrels
Large Vessels
Lamps (with dynamic light functionality)
Anvils
Powderkegs (just don't accidentally step on a fire!)
Crucibles

Notes on using the mod:

The Curios menu is accessible by pressing 'G' or by clicking the button next to the player in the inventory.
Adding an item to the item tag curios:back will allow it to be placed on the back. Any rendering that is done is custom by me, Curios won't do that automatically.
This mod automatically registers renderers for other TFC addons' blocks. For example, any BarrelBlock instance will receive a renderer on its item.

This mod requires the Curios API. This mod requires TerraFirmaCraft for 1.18+

This mod is under the MIT License. This means that you can include it in your modpack without asking my permission.

TFC, which this mod is an addon for, is under the EUPL license. When using portions of this mod, be aware that the TFC license may apply. You can view that license on that mod page.

Curios, which this mod depends on, is under the LGPL. You can view that license on that mod page.