I have an el cheapo set of scales from eBay. I paid £3.99 of thereabouts. It’s about 11 years old.
@dfk41 - how do you get them wet? I can’t see how it can be damaged by a drop of coffee now and again, unless you deliberately spill water/coffee on them.
I can’t recommend waterproof ones. But if you want to give the non-waterproof ones a go, there’s a new release from Eureka:
https://www.bellabarista.co.uk/eureka-digital-scales-with-blue-tooth.html
Looks good, but never used one.
I also have one which looks like this:
However, it’s just slightly too big for the Elizabeth, so I reverted back to the el cheapo eBay one.
Good luck.