I have 
quite a 
few posts about o-ring dampening and the different keycap profiles out in the wild.  I find there is a lot of confusion around the topic.  Hell, tonight someone created an account just so they could PM me to have me help them understand what o-rings they should buy based on their requirements.  
I would like to try to write a comprehensive guide to outline the different o-rings that are available and how they compare against each other.
I need your help.  I need you to send me o-rings that you know the origins of.  With any o-rings sent to me, I would like the link for where you bought the o-rings.  I only need 2 or 3 o-rings, i don't need lots.  I will pay for shipping.
Please PM me if you have a few extra o-rings to spare.  Thx...