Wow this is awesome on so many levels!
Could you just buy wood sticks of that size in the hardware store, or did you have cut them to width yourself? And how is the wood glue sticking to the plastic flare? (Never tried using wood glue on plastic before)







Not sure I buy the “not critical infrastructure” argument. Even if 95% of public (and private) correspondence is digital these days, paper-mail is still used as a fallback for some institutions and whenever a physical copy must be sent for whatever reason.