Picked up a (fairly) cheap 10 port USB charger off of Amazon some years ago, it got pressed into cycling service shortly afterward.

A USB lamp (so I can remember when the thing is on,) six USB micro, a 10' extension for charging whatever, a dedicated Mio HRM charger, and a USB ammeter.

This is right in my bike workstation. The bike stand is out of frame ot the left, just a few feet away. With the extension, I can charge items on the bike.