Butcher Knife
blender, bread box
If you mean fruits, it can be; berries, bananas, blueberries,..... Good Luck!
beater
bank
A ballot is something that starts with b and is used to vote.
beers blender
Bicycle.
Something that is used to stay warm that starts with the letter B could be a blanket.
A battery helps a car run, and it starts with a B.
bra
a BRA
bellow