2. Flying Machine

Want to learn to fly? Well, it won't be easy, but you might have a chance if you build a working machine.

3. Popcorn

There is definitely an easier and more effective way to pop popcorn. Just give me a pot, a funnel, and aluminum foil.

4. Furniture

Is your kitchen in a deplorable condition? No worries. You can always buy new furniture. You just need to be able to assemble it.

5. Car Wash

Don't waste your time by washing your car the normal way. It's better to spend a little more time building a reusable car wash, unless it breaks down.

6. Harvest

Today is a hard day. You have to pick all the apples from the tree, then crush and squeeze them for juice. What can go wrong?

7. Phototrap

Why are you making such an effort when someone is stealing your apples? You have to catch the thief in some kind of trap. By the way, would you like an apple?

8. Barbecue

A grill isn't a grill if it can't be fired up. But remember: fire is dangerous.

9. Tube Post

Moving items from point A to point B is not hard. It turns into a hassle when you have to do it all the time.

10. Ice Making

On such hot days, you need to cool down in every way. From cold drinks, to swimming pools, to — wait a minute, the ice has melted.

11. Bread

It's not good when bread is too stiff. In such a situation, you can bake your own—just don't overdo it.

12. Pizza

So you lost your pizza. Well, this is the perfect chance to make your own. But first make sure your oven is big enough.

13. Garage Door

It's hard to drive a car into a garage that keeps closing. But there is a way to construct them to open at will.