Realized I left my sunglasses at a friends house down in LA though, oops!
And hmm, I wonder how well a mold of a knife would come out. It could be worth testing, but because it is so thin I am not sure how well it'd work, at least with the stuff I have. I can always test it on something small and thin to see what happens.
I still need to buy more of the RTV for the molds before I can do a whole lot more either way though.