Could it be scissors? Scissors are two (pair of) cutting blades pivoted (joined) together.
A sharp knife, and a pair of scissors.
The homophone pair that needs to be corrected is "their" and "there".
A knife, a pair of pliers, all the gear you would need to fish with.
It can either be a noun, as in a pair of scissors, or it can be a verb, as in "Funding was scissored".
The following is the answer.
sticks
A trapezium.
There are many websites that sell wooden knife holders. One of which can be found at the following URL: http://www.cutleryandmore.com/knife-blocks. Prices start at $20.
helen attacks martha with a pair of scissor
Gunfight.
fries
ale