1. Any door: Any door is also called a random door. The method of using an arbitrary door is "when opening the door, think about the destination, otherwise it will lead to an unpredictable area." At the same time, the scale on the door handle has appeared in the movie.

To adjust the time, Nobita sometimes uses the random door to visit Shizuka's house.

2. Time TV Time TV looks like a TV set. By adjusting the time and location, it can present anything in any time and space in the past and future.

The time TV can see the past and the future, especially the future. If someone with evil intentions gets it, it is likely to have an impact on the future, leading to serious consequences.

3. The perspective telescope can adjust the area you want to see by adjusting the built-in dial.

It functions like a "free telescope", but the difference is that this one does not need to be installed in a telescope and can be used directly.

4. Air cannon. The air cannon is a commonly used prop in Doraemon. It is cylindrical in shape and has a hollow interior. When you put it on your hand and say "touch", it will emit air pressure to attack the enemy. It is especially popular in adventure stories.

It appears especially in long novels, usually used by Nobita and Doraemon.

5. Compared to the air cannon, the invincible turret is more powerful. After being mastered by Xiaofu, even Doraemon was at his wits end. The new invention of the future world is an offensive combat weapon, with amazing power and invincibility.

, possessing unlimited energy.

As long as it is installed, the user can bombard anyone at will, and every shot will be a sure hit. No matter where you are, you can't escape its attack.