Reminds that I did something manually before -- a puzzle for a seed phrase inside a typical red packet. It... was not really a hit haha.

Not really my culture but these red packets (they say ang pao) are very common in Southeast Asia where I'm from. The Muslims and Hindus in the region have also taken to it for their own holidays/wedding gifts (green packets and purple packets). They get really, really fancy. 

Yours do seem a bit on the expensive side... should include more details like they do on these custom packet sites: dimension, paper thickness, weight, emboss, etc.

Also, where is your pay with BTC link?!

P.S. I've put the images down here for easier viewing (you can edit your OP to use these links).