I was lazy and didn't updated this thread in a long time. Shame on me. The good news is, since last time I got nine new stationeries. That increases the total to 67 bonus stationery (if you don't want to count yourself open the letterbox, then go to the home menu without ending the app and entering friendlist, on you card you see that you use letterbox and the number of bonus stationery you collected).
The newcomers are:
Lego City Undercover stationery via fedfed:
Super Mario AR game stationery from a friend outside of VGC:
Animal Crossing stationery from SethNintendo:
Mario and Donkey Kong Minis on the Move from fedfed:
Monster Hunter 4 from Mrbittermelon:
Zelda from Eiji Aonuma (E3):
Pokemon X+Y from Tsunekazu Ishihara (E3):
another Pokemon X+Y from Junichi Masuda (E3):
and another Animal Crossing staionery from Glitchmach:
Thanks alot! Now, our next target should be to collect 100 bonus stationeries. I know we can do it!
If you miss out on something: say which one, so I can send it to you. If you have a stationery I didn't list: please send it to me!