Believe it or not I've considered doing this. A look at 10 modern ways to wear a traditional tartan kilt... I think it would be very helpful - especially for younger members.
I'd certainly include my own versions of things - such as a tight, untucked t-shirt with day sporran as being the least formal. I could also include wearing the kilt with black, hi-top trainers - as I regularly wear this. On the issue of semi-formal I'd go for a black shirt with the top couple of buttons unbuttoned and a contemporary jacket.
With regards to sporrans - I have a range, though, none that are very contemporary. I could still go for it and make a guide like this at some point next week, though?