Alka Seltzer multiple uses

How to clean your toilet bowl with Alka Seltzer
Remove 8 Alka Seltzer tablets and fill a measuring cup with 2 cups of tap water.
Microwave the water on high for 3 minutes until warm but not boiling.
Add all the alka seltzer to the warm water and wait until the tablets are completely dissolved.
Stop the temporary flow of water to your toilet by lifting up the float lever that is inside of the toilet tank. This will allow the valve to shut and not allow water to fill up in the bowl.
Flush the toilet so that all of the excess water is out of the bottom of the toilet.
Dump in the Alka Seltzer water to the empty toilet tank. Allow it to sit for 30 minutes.
Brush the bottom and the inside of the toilet bowl gently with the toilet bowl brush.
Lift the back of the toilet lid up and drop two dry Alka Seltzer tablets into the bottom of the tank. This will automatically keep the tank clean for the next few flushes.
Release the float and allow the valve to open and the toilet to fill up with water. Flush the toilet.
These directions are from EHow.com

Clean a Coffeemaker
Fill a dirty coffeemaker with water. Insert four Alka Seltzer tablets and let them fizzle and dissolve in the water.
Turn the coffeemaker on and run the brew cycle.
Dispose of the water when it finishes dripping into the coffee pot.
Refill the coffeemaker with clean water, brew it and throw the water out when the cycle finishes to ensure a clean coffeemaker that's free of buildup and Alka Seltzer residue.

Clean a Flower Vase
Put warm water in a narrow vase and drop two Alka Seltzer tablets in it to combat stains at the bottom of the vase.
Cover the vase's opening and shake a bit. Let the vase sit for about an hour before rinsing it out.
Repeat the process to clean glass thermoses and other dishware with small openings.
Remove Stains From Glass Cookware
Pour water into a stained piece of glass cookware.
Add six Alka Seltzer tablets. Allow it fizzle and soak undisturbed for an hour.
Use the rough side of a sponge to easily scrub away the sticky buildup and unsightly brown stains.

 Clean Jewelry
Get a glass and put an Alka Seltzer tablet inside of it.
Untangle your jewelry while Alka Seltzer is fizzing.
Dunk your jewelry into the Alka Seltzer water for a few minutes and remove to find your jewelry shining like new.