The glass I want to invent

In a certain community, you will see colorful paintings on every window. You may ask me: "Is this a new type of sticker?" "No!" I will tell you proudly: "This is exactly the 'painting glass' I want to invent." On each piece of glass there is a pistol-sized "color sprayer" with nearly 50 colors on it. Just change the bullets in the gun to the color you want, then point it at the glass and spray out the color to "paint" it on the glass. If you want to wipe it off, just wipe it with a special potion.

It is very difficult to clean the glass in today's high-rise buildings. If you lose your footing, you will fall from the building and get injured. The glass I invented solves this problem. It is "automatic cleaning glass". If your glass is dirty, it will automatically spray cleaning fluid from the bottom. After spraying, it will also extend a brush to brush away the dirt. Then it sprays clean water and dries automatically, making your glass clean and bright.

I also want to invent an "automatic vacuum glass". This kind of glass can suck up the dust in a room and create fresh air. In this way, we no longer have to worry about diseases caused by dust!

If I invented these glasses, I would definitely make a contribution to everyone.