I think a new tag, "strimmer", should be added, at least as an alias for some other tag. It's a common British term for "String trimmer" or "Edge trimmer" or "Weed-whacker", and I have found myself wanting to tag my question with this on a couple of occasions.
They seem to be mentioned widely enough to warrant a tag; the proper name for them seems to be string trimmer, with strimmer being one of the synonyms, so I'll create them and add the tag to your post (expect a couple of edits as I do it). Update: done!
I'll also go through and retag some older questions that could use the new tag.