Semi seriously, if you find a new job, once your established, ask if you can use their equipment to make seed phrases and offer to split the profits.
If successful, either leave to setup your own facility, or they may invest in you to setup a division in the company.
If very successful, work on the design, seed phrases are good, but there is room for improvement. The real money is in the IP, not the product.
Invent a better seed phrase store from your experience.
The market is small right now, but everything in Bitcoin is growing.