yyz's backpack restrictions
by Laazuli
yyz's backpack restrictions is a Fabric add-on that stops the yyz's backpack mod from placing backpacks, Shulker Boxes and Bundles inside the world.
What it does
The mod keeps the yyz's backpack mod from letting players set down a backpack, Shulker Box or Bundle as a placed block. Other container items named in the author notes, such as backpacks added by other mods, are covered in the same way. Both sides need it, because the restriction has to run on the server and on every client that connects. Releases exist for Fabric only, across nine game versions 1.21.1 – 1.21.9, and the latest file is 0.0.3 for 1.21.9. The code is open source under the MIT License.
Key features
Blocks placing prevented
Backpacks from yyz's backpack cannot be placed into the world as blocks while the restriction is active.
Shulker Boxes and Bundles
Shulker Boxes and Bundles are also kept from being placed, so they stay in inventory.
Other container items
Container items from other mods can be covered too, which the author plans to extend further in future updates.
Compatibility
Latest build for each game version and loader.
1.21.x9 of 9 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Basic Backpack is a Fabric mod for 1.21.1 that is open source under the MIT License and runs on client and server. Server Backpacks is server-side only, open source under the CC0 1.0 Universal license and built for 1.17.1 – 1.18.1. Vanilla Backpack targets 1.21.8 under the MIT License but is not open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| yyz's backpack restrictions | Fabric | 1.21.1 – 1.21.9 | Client and server | 2026-03-06 |
| Basic Backpack | Fabric | 1.21.1 | Client and server | 2025-12-25 |
| Server Backpacks | Fabric | 1.17.1 – 1.18.1 | Server-side only | 2022-01-23 |
| Vanilla Backpack | Fabric | 1.21.8 | Client and server | 2026-06-26 |
Questions
Does yyz's backpack restrictions need Fabric API?
In the catalog
yyz's backpack restrictions is one of 4,058 Storage mods on ModsFinder, and one of 2,474 Storage mods for Fabric. 13,427 mods support Minecraft 1.21.9.
More from Laazuli
Similar mods
What the author says
Simple Fabric mod that prevents backpacks from the yyz's backpack mod to be placed into Shulker Boxes, Bundles and any other container items, such as backpacks from other mods. This feature will (hopefully) be part of yyz's backpack soon.
Official listing
- Modrinth page
- modrinth.com/mod/yyzs-backpack-restrictions
- Owner
- Laazuli
- Published
- 2026-03-04
- Updated on Modrinth
- 2026-03-06
- Facts verified
- 2026-10-15