Toilet thingy

[six00mph]

I bought a new home and during a minor toilet repair I found something in the toilet tank. It's about 5 inches long by 1 inch wide by 1/2 inch thick. It appears to be the same color as a magnet and is very weakly magnetized. It is inside a clear plastic holder that has snap on ends. The holder has four 1/8 inch holes that allow the holder to fill with water.

I only found one in the main bathroom toilet tank, not in the other two.

Any one able to tell me what it is.

 

[irhunter]

Google image search suggests: bamboo flute.
Bong?
Toilet cleaner dispenser?

 

[Jeff Handy]

Former owner probably hiding his butt plug in the toilet tank.

But seriously, my first thought was it is a container for toilet bowl cleaning chemicals, that are slowly released during each flush.

Maybe the magnet is some fufu system to condition the water to eliminate staining?