Kids World: Screen Saver Construction Set is exactly what it says it is: a sandbox for kids (and grownups too!) to create screensavers on their Mac. The way it works is super simple: All you have to do is choose a background picture, drag and drop pre-animated "stamps" on it, add some text or draw anything you want and boom: An AfterDark or UnderWare screensaver file can be exported in just a mouse click!
See also: Amazing Animation
Kids-World.sit (3.55 MiB / 3.72 MB)
Kids World v1.0.1 (comes with UnderWare v1.0.1) *PARTIAL/RECONSTITUTED* / compressed w/ Stuffit
Architecture: 68K (68020 or newer)
At least 3MB of free RAM (recommended 4MB)
Mac OS 7.x - Mac OS 9.2.2
Emulating this? It should run fine under: Basilisk II