— Scrap is the stream currency and separate from channel points. Scrap is used on the overlay to perform various tasks. Scrap is saved across streams. — Repairing - over time items in the overlay will decay. If you have available scrap, you can use it to repair items and increase their lifetime. — Any items that you've gifted to the stream can be scrapped as long as you have it's channel id. Over time the scrap value will lower as the item decays.