Do you need to be able to weigh something quickly all the time?
Or maybe you just like old fashioned tech
This Salter Pocket balance may be just the thing.
It is old and the scale is quite small but it says it will weigh anything you can hang on the hook up to 50lbs. It also has a kg scale up to 23kg. I have not tested it to check accuracy.
Portable weighing scales (West Bridgford NG2)
This offer has been gifted to someone and is no longer available.