Well, these are some great pieces but I need to vote for a Sonic. I'm going to pic my top four for 1st, 2nd, 3rd, and 4th places. I'm also voting for what I think is the most "Sonic Screwdriverish" of the bunch since a few remind me of scaled down lightsabers too much. Also I'm voting for stuff where I can't readily tell what it's made out of.
1st: Entry 31 (I really like the gears in the clear section and the choices of colors are excellent. It's a simple and elegant design and I like it enough that I would own that.)
2nd: Entry 17 (I really like the piece on its own. It has a real good feel to the design to me as a hastily built tool and even has a working extension on it. The case, the key and the label on the case are just pure gravy to me)
3rd: Entry 4 (This is a great piece. I like how the emitter has a classic series halo on it. I recognize the work and I like this handle much more than the old piece. Great job!)
4th: Entry 35 (I really like this and if the emitter was a tad bigger and the jewel was integrated into the emitter head more then it would have been much higher because that handle and grip are great!)
Honorable mention: Entry 16 (you cheeky bugger! :lol )
Entry 32 (that's just clever and sleek and I could picture that being used...if the Doctor was making a cameo in Star Trek TNG XD)