“He only had a crumb of hope left after failing the exam.”
“I brushed off the crumb from my shirt after eating the croissant.”
“He may seem charming, but deep down he's just a crumb.”
crummy
(informal, British Columbia and U.S. Pacific Northwest) Small van, bus, or railway car used to transport loggers or other resource workers to and from the worksite. A common term when referring to a vehicle with a compartment separate from the cab, housing the silvicultural, logging or mining crew during transport.
“Three quarters of an hour later, when Jerry brought the bag back, the crummies were still crackling happily.”
“Sure, this comes at the cost of some additional potential wear and tear on the caboose, but crummies are tough and the learning experience seems worth the price.”
“Then I heard the anguished bellow of a Himalayan cow-one of the little black crummies no bigger than Newfoundland dogs.”