Slide Whistle - effect used a lot in classic animation. Pitch goes up. Recorded with Zoom H4
various calls from a plastic shepherds whistle, for giving commands to sheep dogs
a shower valve turned on - water turned off. It made a nice squeak. SonyMD (MZ-N707)
Some blips I made playing with a Doepfer Dark Energy. LFOs bending pitch and filter cutoff. They could be used ...