Hi ihavenoname,

Great idea of NYC bumper sticker and logo !!  I am thinking  of attaching  NYC sticker/logo on the frame of License Plates, or we can custom-make NYC  logo frames of License Plates.

For the Coinomi wallet , actually it is easy to use. Now is b3.  You may refer to this video:
https://www.youtube.com/watch?v=Yrn8LYerOd4&t=160s