Bubble Bob 

SpongeBob SquarePants, Patrick Star, Gary, Sandy Squirrel and Squidward Tentacles float through Bikini Bottom for your enjoyment. It includes mutable music.
spongebob squarepants bob screensaver screen saver

Tentacle 

Screensaver with 3D rendered images of tentacles. There is something outside your screen trying to creep in. They appear not to have washed their filthy tentacles! Options include DropShadow, Dirt Stains, Wear & Tear, hide/show desktop and more.
3d graphics screensavers