I played with my dog's tags on it's collar and got this nice sound from it. Sounds similar to rustling keys or coins. Recorded on a samsung galaxy s20 5g with easy voice recorder (app for android, available on google play).
For the recording process, i typed a bunch of keys on my keyboard. That's right! it's actually typing sounds. Use this for a person playing fortnite or something in your videos.
Assorted chord oneshots played on a piano that i found at the university of sydney back in 2014. Recorded in 96 khz for the heck of it, using a rode nt6 condenser microphone and a zoom h4n recorder. Sorry but i do not remember the chords and i am not musical enough to figure them out for the file names, but they are most likely all played on the white keys.
This is a harmonica sound played by suzuki olive c20 harmonica(g key),recorded by iphone and i converted it into wav. It's monophonic, sampling rate 44100, 16bits.
I decided to tinker around on an old kid's practice first act piano. There are metal rods inside that are struck, and produce a plink/ringing sound. It is also out of tune, which makes it wonderful for producing an eerie feeling when played in a minor key.