Now that's some odd subjects there. Fleas and ticks, please tell me that they are all dressed up and at a flea circus, right? Big top flees?
I think the screw on diopters would be worth a try at the beginning but they might not give you the necessary macro feel you want. I'm going to be buying a few when I get the HVX.
The 35mm adapter might offer some interesting results. I think that focus is critical with these though so you will probably need a good amount of light and maybe a focus puller.
These were made using a Nikon camera with a little adapter ring that allows you to mount a lens *front element backwards*. An ordinary 50mm lens became a considerable macro, and a 24mm became a hypermacro. Of course, the depth of field is hair-thin, but that's part of the fun. I just modified a lens blind cap as a shade to cut down on flare. but presumably the g35 rig could be made to work in the same way.