when I did mine I got lucky w drop bars from an old '70s Ross road bike I had in the basement from dumpster diving, not really, actually yard sale scavenging I think. (tried a cpl other bars but the Ross' had the correct matching diameter) used the same stem & rapid fire shift/brake levers. pretty funny how they transferred w no muss & no fuss. looked weird but w my big hands they worked perfectly. I added a steerer tube extender, I think that what it's called to raise the bars up. bike turned out to be an awesome commuter & fast as heck. was also the most comfortable bike I ever rode. never should have sold it

Drops for the hybrid

started with this




ended w this




but before you go hog-wild you should know there are other kinds of bars that might work for you. bunch of samples in this thread
Drop bar or flat bar, which is better for commuting?