New to the RPF, but I have watched a lot of the Tested videos. I am not a prop maker myself.
I know how important reference material, especially original props, are to you all. You may be aware of this already, but in case you are not there is an original Yoda puppet on display at the Credit Suisse offices in London, UK. It is in a display case high up on a wall of the main trading floor. I know this because I used to work there.
Unfortunately, I don't work there any more, but if you want to see it you might be able to contact them and ask for a tour (probably at the weekend when the floor is quiet).