Re: Grip Straps
At least today's shot is of a girl wearing gymnastic grips, which are totally different from straps. They obviously provide appropriate assitance in the case of the WOD she is doing because they require less frequent chalking of hands, and with 100 Pullups/KBS they will prevent tearing. If you aren't using gymnastic grips for high rep gymnastic bar/ring work its pretty much just stupid.
Other than that I've seen wrist wraps and gloves, but have yet to see any photos including weightlifting straps and I would be sort of surprised if they were even permitted in competition.