Personally I would love to see a Grin hardware wallet, fully open source, similar form factor as the blockstream Jade hardware wallet. The hardware only costs 27$, everyone could order the hardware and flash the software to get his/her air-gapped hardware wallet. Only cevat, this version has no secure element. There are slightly more expensive ones that do have a secure element for those who want it.
Probably large chunks of code from the Jade, such as the core libraries and moving QR can be reused.