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Sound effects of doors (many creaky), knocks, doorbells and the like mapped to kontakt.

Octaves: Sounds
C1&C2: Paired opening and closing doors, generally creakier as you go higher.
C3: Creaky Doors
C4: Knocking
C5: Doorbells
C6: Miscellaneous

Created by bigcat from Public Domain and Creative Commons Attribution sound effects.
Sounds from FreeSound.org sampled by Anton, Leady, Ddohler, The Bizness, Lg, Matucha, Joe Deshon, Zabuhailo, Tiptoe 84, Baujahr 66, Ultra Dust, Simpsi, Omar Alvarado, Land Dub and Aiyuma. These are credits and not endorsements.
Thanks to everyone who samples and allows us to use the samples for free.

An instrument created from the One Laptop per Child sound samples Tiple sampled by Andres Cabrera. You can get the samples at http://archive.org/details/AndresCabrera .
Note these are credits and not endorsements. Samples under Creative Commons license: Attribution 3.0.

A tiny experimental piano using only the A notes, using envelopes and filters to simulate velocity layers.
Based on public domain samples from University of Iowa Musical Instrument Samples, http://theremin.music.uiowa.edu/MIS.html .

This interesting instrument created and sampled by Prent Rodgers. He calls it a Finger Piano. It has 31 tones, but I spread it across the whole keyboard. You can get the samples at http://archive.org/details/PrentRodgers .
I'm not Prent Rodgers, nor endorsed by him or One Laptop per Child. Samples under Creative Commons license: Attribution 3.0