I chuck them all in a cheap plastic bin (approx 6 quarts or 5.6 liters) that sits on my dresser. I sorta keep all the same brands "together" but the moment I go fishing for a different knife, it all gets jumbled up. It's sort of a LIFO system and the knives at the bottom of the pile rarely get used. Of course, remembering to put them back is also a challenge which is why I have 8 sitting on my desk right now instead of back in the bin where they should be.

Not a great system, not even a good system, but a system none-the-less.