Force Connection

Today teacher taught us what force connection is.
It's like 2 or more different things mix together to become one thing with many functions.
I kept thinking,but it's really hard.We can't just randomly pick 2 things.For example,pencil and eraser,althought it's 2 different things,but there's a connection between the functions of these 2 things.
Finally I got 3 ideas.

The first is a pants.I call it Zip Transformer.It's a long pants with a few zips on it.You can make it become a shorts or a minipants by opening the zips.And as we all known,usually girls' waistline is smaller than guys'.So I put two zips upon the pockets,so that the waistline can be suitable for 2 people.

The second is a fake 2-piece.The upper part is a mini dress,and the lower part can be a dress or a pants.

The third is a bag with a foldable chair.Imagine people are traveling to somewhere famous and popular,they need to queue for quite a long time,but the bag is very heavy,what a bad experiance they will have.What if the bag can be a chair?So that when they're queueing,they can just open it up and rest on it!