Multi-Compartment Key-Holder

This is something i've been working on for a long time, It was the reason I initially bought my 3D Printer. I've always hated how pointy my keys were in my front pocket, and how it took me a few seconds to find which key I needed.

I wanted to make something to keep them in an organised layout, and solve these issues, but the solutions online, even in the 3D printing community, didn't really do everything I wanted, although this came close.

I also wanted to have some storage attached, as if i was already going to have a fairly bulky rectangle in my pocket, i didn't mind it being a bit bigger and having a lot more functions.

This is the latest iteration of several designs, and the most complicated yet, however it is still a 'work in progress', as i'm planning on adding features and refining the design, but this will be a slow process as I'm very happy with it currently.

###Features

Small multi-purpose box (Designed to hold a folded UK £20 note, plus however many Paracetamol, Ibruprofen, antihistamine and Rennie tablets I can fit. Can also hold anything else small enough though!).
4mm hex bit / screwdriver holder and socket.
Usb slot (only designed to fit this USB stick).
Latches on the USB slot, and both containers with magnetic ejection for the 4mm hex bit container.
Up to 3 standard keys, but will need modifications or shims to fit most.
(planned) an ultrabright LED torch.
5x magnets embedded into one face of the keyring to help find screws when dropped on carpet.
Tesco & Sainsburys (supermarkets in England) reward card barcodes, cut and press fit into place.

###Bill of Materials

3x 4mm nuts and bolts (I bought mine from a local hardware store, so these may not fit exactly, but modifications shouldn't be too hard).
4x 4mm washers, printed washers probably work great.
3x glasses/watch screws, I used 2.5x1.4x8.0mm screws.
2x springs, taken from any generic pen.
1x Kingston USB Stick.
9x 3mm dia x 2mm thick neodymium magnets.

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