Q: Here is a goal: How can you get crumbles out of your keyboard?

How would you accomplish this goal?

A: Using a can on compressed air, attach the straw and place near the keyboard. Squeeze the trigger and move the can along each row blowing out the crumbs.

Q: Here is a goal: Remove dust from window curtains.

How would you accomplish this goal?

A: Blow off with hair dryer.

Q: Here is a goal: What size of wheels should be used on a barn door?

How would you accomplish this goal?

A:
The size usually depends on the size of the door and personal convenience, however, small wheels are preferred.