I picked up one of these last night. I'm thinking they would be pretty cool as a walker, but I'm not sure what force they would best fit in with and what simple conversions I can do to make it fit the 40K aesthetic better. Size wise, the top of the spider is a little less than 2" in diameter and I'd say it's about 3" tall; maybe a little taller. Any ideas?

::grin:: I might be a bit biased here but...

Tau. Without a doubt. The gun emplacement turrets on Forgeworld, to be specific. Painting them and not messing up the internals might be touchy... but then, I do most of my painting with a toothpick...