I use a clear plastic pencil case (0.49 from Menzies) - I also put an address label with my name and phone number. I carry around 1 at a time.
I found that the clear plastic pencil cases suit me, as should anyone see them, they would see clearly what it contained.
I count out all the needles I will need, the needle cutter, both insulin pens, and a 7 day pill dispenser for all other meds, and an old strips tub for the used needle stubs.
When I get my repeat prescription, I make up 4 weeks at a time, leave them in the fridge. I bought more needle cutters (they are only around 2.40).
Hope this helps
Hazel