Coffee Draino
If you don't feel like shelling out for some Draino, another way to keep drains from clogging is to mix ground coffee with dish soap and boiling water. Mix it up, pour it down the issue drain, and watch as your sink fixes itself with this cheap hack.
Tub Ring
If your tub has that icky ring around it, you can use your breakfast cup of joe to fix it! Use some leftover grounds from your coffee to scrub the soap scum ring. Use a little soap to give it a cleaner feel. Easy to do and you'll smell lovely!