In reply to iksander:
The hex tools would suggest looking at cycle multitools, although the pliers bit might prove difficult...
Quite a few similar queries come up on biking forums when you google.
One of which has a link to
http://www.topeak.com/products/Tools/ALiEN_DX
Rather small pliers...
I have a small multitool from the 99p Store with reasonable pliers; maybe one of these and a small cycle hex tool?