Toilet Duck

The formula
Grandpa is very economical dude.
+
Also he is very modern man.
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and what you get?
=yes, A Modern Ecological Toilet


Grandpa never likes wasting things when you can save them. Therefore he admired my toilet that had an ability to flush with full tank or by measure you think is appropriate.

Grandfather didn't have that kind of toilet. Only the one with the ability to flush with the whole watertank. Therefore he decided he should do something about it.

Now he has A Modern Ecological Water-Saving Toilet called Toilet Duck, with pretty neat interface made by grandpa.