Possibly, because I just did some sticker and song farming in Brawl. A CD farming stage works great for quickly collecting those hard to get random spawn stickers and CDs.
Go into the custom stage builder and make a stage full of conveyor belts that lead to a central point. Optimally this central point should be closed on all sides except the top opening. Then start an infinite timed brawl with sandbags and only sandbags on very high on that stage.
It helps a lot to have a turbo controller you can just tape a button down on, but eve doing it manually you'll get a lot.