Unfortunately, people not very wealthy rarely have to store amounts way bigger to what they hold on exchanges and other platforms. So storing their 2FA backup safely is usually as critical as protecting their cold wallet seed for them, and using an aluminum plate is not suitable for that. For them usb drives or printed papers will always remain the only viable solution.
It is just an alternative or safer option. A sheet of aluminum plate when can even be obtained at a cheap price at the building store.
Or using washers which is certainly easier and this method has been discussed by
@fillipponeSecuring Your Seed Phrase with WashersYou can use the Blockmit Washer Jig to stamp the washers with precision and easier.
Or if you want to save more money, you only need to stamp it manually.
https://www.cryptocloaks.com/product/blockmitjig/All you need is Metal Stamps Letter & Number tools, a hammer, and Bolts.
You can get all those materials easily.
USB Drives and Printing paper are just the initial solutions, but when someone needs a backup that is more durable in all conditions.
Then it is necessary to use washers or some other media. Security always comes first.
And USB drives today have many counterfeits that have poor quality materials and result in the performance of the USB drive (components break down faster).