Pickup Tweaker Tooll2backpack:pickup_tweaker_toolPickup mode allows items you pickup to be placed into backpacks automatically. Use Pickup Tweaker Tool to change mode.
Destroy Tweaker Tooll2backpack:destroy_tweaker_toolDestroy Mode allows you to destroy items picked up by pickup mode. Use Destroy Tweaker Tool to change mode.
Use a combination of pickup mode and destroy mode to make one of your backpack a filtered trash can.