Small audience yelling "woo!" and things like that
Putting a needle into a balloon makes this sound and no other.
Large boom with lots of low frequencies
i was looking for a cartoon novelty running effect and i just couldn't find one so i made one myself.
Here is a SFX I created of a crash with breaking glass.
Some shoe boxes falling down a stair. Recorded with an 'audio technica ATR55' using my Camcorder.
An orchestral slide whistle sliding one note down. This sample is at normal speed.
The trigger of a Nerf gun being pulled.
Steam train blows its whistle in a short burst. Some windnoises. Recorded with a Roland R-09HR
The sound a cartoon character makes when he looks to the camera and blinks.
Recording made while playing with a swing set in the park designed for wheelchairs.
Air horn on an oil rig in Alberta
A pneumatic jackhammer crushing the concrete on a local construction site. In the background you can hear the worker hammering ...
A gulp. Might be good in a cartoon or something!