disposable plastic baby toliets
To put it as briefly as I can: disposable diapers

They can be called disposable plastic baby toliets because they're made of plastic, you throw them into the garbage can (or diaper pale) when they're full, and they have but one purpose: a baby pisses & shits into them, thus making them disposable plastic toliets for babies.
{Horhay}: Hey Linda, I can't find the diapers and the baby needs to be changed!
{Linda}: Don't worry Horhay, the disposable plastic baby toliets are in the cabinet above the shitbowl.