Q: Here is a goal: To conceal your blue pens from people who don't return them,

How would you accomplish this goal?

A: place the blue ink tubes inside of a red pen's case.

Q: Here is a goal: One needs to power their green waste disposal.

How would you accomplish this goal?

A: One could use the power of the sun.

Q: Here is a goal: Keep the attic cool.

How would you accomplish this goal?

A:
Place air vents in to each end and add vent fans facing out.