If you need a new compact 45w USB c charger, the new Anker 313 45w is the same size as the Nano 2 but it's $10 cheaper (for prime members).
I just got a new phone and wanted a new compact 45w charger to replace the 20w Anker nano I use at work. My phone supports 68w with the original charger but I noticed it usually hovers around 50w so I figured 45w is not a huge drop to be able to get a faster but still smaller charger....