Those mechanics time savers look pretty cool! but at over $20 shipped, thats a bit pricey...
It's easy to make a similar bit holder yourself.
You will need some thick plastic sheet. For this type of project I prefer either UHMW (think plastic kitchen cutting boards) or solid surface countertop material like Corian. It is often possible to obtain Corian remnants inexpensively from countertop fab shops. Both can be easily machined with typical woodworking tools such as table saw, router and drill. Just cut to the size and drill holes most of the way thru the material. Don't forget to chamfer the bores.
For a magnetic bit holder, just drill the holes thru the material, and adhere a magnetic strip to the bottom of the holder. Magnetic strip is available from The Magnet Source and other vendors. If using UHMW for the holder, be sure to buy magnetic strip with an adhesive thats made for that type of plastic. UHMW is slippery, and few adhesives work on it.
A guy could make 'em out of wood too.