On: A tiny ultrabright laser that can melt steel

[TeMPOraL]

On that note, did anyone ever make a handheld inkjet or spray nozzle, so you could print graffiti on walls or things on the go? I imagine most of the tech in it would be the same as in the kind of laser device you're asking about.

[garaetjjte → TeMPOraL]

https://spritesmods.com/?art=magicbrush

[daef → TeMPOraL]

the colop e-mark stuff basically puts an inkjet head into a handheld printer https://www.colop.com/de_eur/mobiles-drucken/e-mark