What if the pinned box had an indicator to show you had enough of needed materials to make an item. For example, in photo above arramus has the pipe pistol, pipe shotgun, pipe machine gun and pipe rifle pinned. They mostly take same items so if you had enough to make them all it would indicate that somehow and you would decide which one you wanted to make. Once made you could remove it from your pinned list. After that if you still have enough to make the other 3 it would still say so. Then you just repeat. Make the next one you would want and remove it from your list. Then when it happens you don't have enough to make the rest. the indicators would disappear.