Hi Kate,
I have rsd, and tos, ulnar nerve and carpel tunnel, which kind of go hand in hand excuse the pun.
I find myself dropping thing all the time, my handwriting is terrible, so is my typing.
I have a new iMac, and it alerts me to misspellings systemwide. (any application), which is great.
Something a little heavier though, like a cup of tea, or a soda and I seem to hold it stronger, other wise I'd be a total mess! Weird, I find the lighter the object is, the easier it is to drop...?

Hope you're doing well Kate!

Pete