I made it to identify our five cabinets at my work (otherwise it quickly becomes a mess). It's not an universal design, however, if you have the same shape of keys, you can take advantage of it.
Key cover - print in PLA @ 0.10 mm - no support
Lock label - print in PLA @ 0.10 mm - no support - change colour @ 7th layer
Happy printing.
The author marked this model as their own original creation.