@seasiderdave – thanks Dave! 
There *is* a market for cool cases; but the problem is that you can buy a pencil case (which is what I use for carting about my kit) that’s mass produced in China for £2. To make it worthwhile to make a unique handmade one, @Katie has to charge £15 or so and people don’t want to pay that much more (perhaps understandably!)
Katie’s thought about doing pump and meter cases and other diabetic kit (we even have a brand and domain names registered, etc.!) but it just doesn’t quite seem worth it… 