I was trying to create a loop using the VSTIs Rez3, Wolfram CM and AXP SoftAmp 3OD.  It went quite wrong so rather than delete it I decided to chop it up in Audacity and create a PCM Synth file of glitchy percussion sounds.  There are 60 in total, one on each note from C1 to B5.  They work well by themselves or equally with effects like reverb / delay or filters / EQ.  You could also reverse them, change octave ranges etc.

If you want to the original samples to play around with they can be downloaded from here: https://dl.dropboxusercontent.com/u/90042665/p4hits.rar