If you leave the toothpaste cup on the washbasin as it is after using it, you will not be able to drain it properly. When I was looking at Hundred yen stores for a good way, I unexpectedly found a useful item, so I will introduce it.
This is the "Vertical / Horizontal Washbasin Hook" sold from the "Leaf" series of water-related miscellaneous goods that are 100% familiar. I bought it at the 100-yen shop "Can Do".
With a suction cup behind the hook, it can be used in either vertical or horizontal orientation. When installed vertically, it is useful for storing toothpaste cups, hair elastics, etc. (hook gap is 9 mm).
In landscape orientation, it is compatible with hairbrushes and cups with handles. The shaving, which was also difficult to put in place, can be attached to the shelves and the dead space of the shelves for a refreshing look!
A hook that seems to be useful if there is one such as a kitchen as well as a washbasin. The price is, of course, 108 yen (tax included).