Mine are:
- !<My Name>'s Paperwhite
- <GF's Name>'s Kindle
- <Daughter's Name>'s Kindle
- <Son's Name>'s Kindle
- <My Name>'s DX
- <My Name>'s iPhone
- <My Name>'s iPad
Really creative, I know. :-) Notice the ! in front of my Paperwhite's name. That's because Amazon's default send-to device is the first one in the list, alphabetically. The ! sorts prior to any letters so my Paperwhite is always the default, which is the one that receives the most content.