[Q]: Which of the following solutions is better for the following goal:
How to fix a plastic key holder which is broken or split?

[A]: Heat the plastic with a small flame and once hot, press the two parts together and hold them in place, one you remove them they should hold together again

[Q]: Which of the following solutions is better for the following goal:
How to release an item from a zip tie.

[A]: Cut the zip tie with scissors.

[Q]: Which of the following solutions is better for the following goal:
how to make a cookbook stand

[A]: Simply fix your cookbook into a skirt coat hanger, and hook it on one of your high, kitchen cupboard doors for easy reading.

[Q]: Which of the following solutions is better for the following goal:
What material is good to make a wall pocket from?

[A]:
Cardboard and plywood are both good, as they both give a casual look with a sturdy structure.