Feature 'logo/labels' on cases of self made devices
For example, on any consumer device…


Of course you can use a marker

No.
Nobody can use these logos without some sort of conditions; they typically are registered designs, and usage is usually only granted after paying a royalty (among others, HDMI! That's why a lot of expensive measurement equipment has displayport instead of HDMI: Nobody wants to attach a TV screen to it, and DP is royalty-free) and/or demonstration of technical compatibility (WiFi, Bluetooth,…).
You (and manufacturers of consumer electronics) can't just go and use some logo because you want to. Doing it regardless leaves you open to legal injunctions, or your goods being seized on entry to the country where you want to sell them.

Are there any generic/default options at this field?

Printing custom stickers in any count that is relevant to a consumer device is essentially as expensive as buying &quot;standardized&quot; stickers, so I doubt that. It's, in the end, advertisement, and you'd want that to be well-aligned with product design.