I have a ground down 15mm spanner and a normal one for pedals. But I did see a lovely wooden handled pedals spanner once and have been searching for it ever since sad I know.
If you are going to use Loctite, remember to use the blue Loctite, not the red stuff as you might have a wee bit of trouble undoing it if you used the red stuff! Also, I always put a dab of grease on pedal threads before installing them.