(There's no video for Squeaky Toy yet. Please contribute to MR and add a video now!)
Squeaky Toy is an extension which once activated, turns your mouse into a literal squeaky toy. Each click of the mouse will emit the high pitch squeak that everyone knows and loves. This is garenteed to not at all become annoying.
The author, Alex Metcalf is better known for co-authoring Bubble Trouble, but its clear that Squeaky Toy is by far his greatest achievement.
Squeaky_Toy.sit (24.47 KiB / 25.06 KB)
/ compressed w/ Stuffit
System 7 required. Speakers would probably be handy as well.
Emulating this? It should run fine under: SheepShaver