We've put together this little DIY for you all to have a go at. It is surprisingly easy and looks really professional, I, personally, am chuffed with the way it has turned out. Obviously, you can use whatever colour fabric and leather you want. I got all of my material from my local market and it only cost me £5 (and I didn't even use it all!). One thing I would mention, is that after making the bag, we realised that it was a little floppy because our leather wasn't hugely stiff. If you have the same problem with yours, just cut the back off a cereal box, cover it with your lining material and pop in the back of you bag. That will give it a little extra support if it's needed.
Lining material (we chose tartan)
Magnetic clip fastenings