A small bag used to hold toiletries and personal washing items; a toilet bag(noun)
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Use "washbag" in a sentence
"He was not wearing oversized headphones, a beanie hat or carrying a monogrammed Louis Vuitton washbag, which bodes well for the future, even if it does raise questions about a potential lack of personal hygiene."
"Got your own secrets for effective washbag planning?"
"As the picture shows, two of the items that feature (perhaps improbably) in my own washbag are the Mennen shave stick and a cheap generic tube of toothpaste."