Abstract Percussions is a free sample pack from GhostHack consists of 25 abstract percussion samples and 3 percussion loops. They are all recorded as 24bit .wav files, 140BPM.
Especially the one-shot samples are very useful for creating your own drum patterns.
All samples are royalty free. You may use them in commercial as well as non-commercial projects for music production, video production, video games, etc.