I'm pretty much agreeing with doing Ice/Bug. I could of sworn it was the reverse, but that doesn't overly matter in the grand scheme of things. I think it would be a bit weird for a little plant covered in Ice to turn into an Insect as well...
The only other one I'd agree with is Bug. It just looks so much like a little insect.
I'm on a mission to train every Pokemon Family during a playthrough of 3rd to 5th Gen! Currently at: 532/602!
Current Team (White 2 [4 badges]): Vulpix/Zoroark/Mr Mime/Cherrim/Deerling/Marshtomp
Current Team (Black 2): Solrock/Emboar/Sunflora/Crobat/Dunsparce/Azumarill