Hey Lisa! I have done all of the above. I am happiest with printing them on 28 lb. paper, which is pricey, and printing on cardstock. No lamination. I still have a couple vertical envelopes that are laminated but the rest are not. I do not carry these with me. I just use a regular wallet and made my own dividers out of index cards, Post It tabs (all of which I already have at home) and thick laminate like this (sorry the pic is so bad! ):