Creative Commons Attribution to Luftrum
From Sound Bible. By Mike Koenig and Chester Barrett. CC Attribution 3.0
Jawharp Boing straight from cartoons. From Plingativator. Public Domain.
Basketball Bouncing. By Shakaharu. Public Domain.
Goose Sounds. From the U.S. Fish and Wildlife Service. Public Domain.
A old sound effect instrument called The Doors.
Bell Can Bucket A tiny percussive instrument featuring the sounds of bell, can and bucket. Its Creative Commons Attribution, please credit OLPC.
You can find all the Sound Effects at the bottom of this GM Instrument List.