I've used a case I got from hobby craft which stored a set of scalpels of all things! Basically we have lined it with cream coloured velvet and stuck the foam insert which came in the mini e cigarette box in the top half giving a lovely slot system for a fully screwed together mini e cig plus one spare battery. However, in the bottom there is ample room for a considerable amount of carts or liquids, its a lovely design and I will most certainly share photos when it is complete. Tomorrow I aim to pick up some purple velvet, or like material, to line the outside of the box. This is going to be a most sexy design, to say the least! I look forward to sharing the design, it was very easy to put together.