Shall we look under the bathroom sink? If you have additional storage, put it on your calendar for another day. Let's just take one small area today - under your sink, a drawer, or a shelf in the medicine cabinet.
Take everything out and clean the area. Toss anything that is outdated, you're not sure what it is, or it hasn't been used in a year.
Organize according to categories and replace your remaining items. Are there things you threw out and need to replenish?
That was quick, wasn't it?