Love jef41's design and have put it to good use with all of the flash media I use for DIY Electronics projects. With IoT tech expanding, I've been exploring GSM data communication, and that can rack up a lot of SIM cards. So hey, why not include them in this mix?

Modded a standard "tray" to accommodate Mini SIM cards. The angle notch is obv. not required, but it positions the card properly over the offset 'extract-hole' - kind of thinking that many cards will be mini/micro/nano combos, as shown. It also orients SIM numbers on the cards towards you. (Shown, but redacted...I'll pass on the mass texts.)

In fitting with the original designs, I sized this to match the standard thickness of 2mm
This way, one can still simply mix 'n match up to 17mm. (With 2's and 3's)