I second the idea of a few safety pins.
I think the toothbrush is a good idea.
The life saver breath mint is a good touch.
(nothing worse than something stuck to the teeth or bad breath before a meeting, it is something most folks don't think about)

I agree with the idea a dental pick is redundant with the tooth pick already in the SAK card.

Human nature being what it is they will likely use them for things you didn't expect, lose them in drawers, quietly discard them because they just don't think they matter much and other odd responses.
But it is the thought that counts and these carry the message that you care about your employeees. so when you see them being set in the back of an office drawer or the tooth brush used to clean a keyboard don't get upset.

By the way, a large sewing needle might be a good addition.
It can be used for stitching a button back on and it takes up very little room.