Melt in the mouth biscuits that are totally wheat and gluten free. They are quite small but nice for a sweet snack. For a gluten free and dairy free version, simply opt to use margarine instead of butter.
If a biscuit doesn't quite work, scrape it off the tray and clean the tray with a piece of kitchen paper, put the scrapings back in the bowl to use on your refill. You can change discs as often as you wish.