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Toyota builds experimental hydrogen-powered pizza oven and grill.
(www.autoblog.com)
This is a most excellent place for technology news and articles.
Portability is hard for hydrogen since you hadn't liquify it without huge pressures and cryogenic temps, so you need big tanks. But cooking stoves does seem like a pretty good use case.
Compress it to 10,000psi and it gets portable enough.
As I said, huge pressures. You'll need super heavy or super exotic tanks.
What's so exotic about a composite pressure vessel? They're already used in scuba and paintball.
Scuba tanks only go up to 5.5ksi. I think you'd need more like composite over wrapped pressure vessels (COPVs) for 10ksi. Those are relatively new even in spaceflight. SpaceX discovered some new physics when their AMOS-6 mission exploded on the launch pad in 2016 due to oxygen freezing inside the composite layers.
Here's some more info on carbon fiber tanks vs COPVs https://www.reddit.com/r/SpaceXLounge/comments/taibc7/in_our_experience_copv_gainpain_flattens_out/