I print and make my paper wallet offline (on white card stock) using this website's source code, found on GitHub.
I've purchased some stickers and bags from the website, Canton Becker, the developer, handles all aspects of the website. I've even purchased custom amounts of things, that are not an option on the website. Anyway... I then spray one side of the card stock with Krylon Preserve It Aerosol Spray, Matte Finish I let that side dry for a bit (only takes about ~5 minutes) I then cut out the design and fold it like shown in this video or on his website then I place the stickers like shown. Lastly I put them in a bag that comes with the wallet and... Tada!