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.