[Q]: Objective: To tell if your eggs are fresh or not.
[A]: Place an egg in a dish of water. If it sinks, it's fresh; if it floats, it's not. If it stands on one end, it's best to use soon.

[Q]: Objective: To open a nut.'
[A]: Put a spanner on the nut and turn it anticlockwise.

[Q]: Objective: How can you make a pedestal for a homemade rain gauge?
[A]: You can use duct take to affix a long stick or pole to your rain gauge and then drive the stick into the ground in your garden or other location.

[Q]: Objective: Make a string dispenser.
[A]:
Cut hole in coffee can to grab string from yarn roll inside can.