Magnetic Fridge Holders

Various pen/marker magnetic holders. Using [12x3mm magnets](https://www.aliexpress.com/item/10PCS-12mm-x-3mm-Super-Strong-Round-Disc-Magnets-12-3-12x3-Rare-Earth-Neodymium/32753359332.html) and [5 minute epoxy](https://www.amazon.com/Loctite-Heavy-8-Fluid-Bottle-1365736/dp/B0044F59N0/ref=sr_1_10?ie=UTF8&qid=1492823949&sr=8-10&keywords=5+minute+epoxy)

The dry erase marker holder, holds 10 markers loosely.

```fridge-pen-v2.stl``` has larger openings than original and is a complete sphere.

__Assembly__
Fill holes in back with small dot of 5 minute epoxy and insert magnets. Note populating all magnets it not necessary. Tape magnets with masking tape and let cure. Wipe up any extra epoxy with rubbing alcohol.