The scissors use a First class lever system in order to work. It uses this system to cut objects with the least amount of effort that can be applied.
Pic 2_ Correction Tape
The correction has gears in it that works together to wound up the tape. Together they act as a type of chain and sprocket. This allows the tape to be used and than rewind into the cartridge.
Pic 3_ Stapler
The stapler is a Class two type lever which has a fulcrum at the back and the effort is applied at the front and the load is also at the front but only a little more at the back of the effort.
Pic 4_ Charger Head
This uses a Class two type lever to bring out the two pins and has the effort applied at the end of the pins.
Pic 5_ Launcher
This uses a simple reck and pinion to launch spinning tops. There is a pinion hidden inside the launcher and the string acts as a rack.