It's not happening at the moment even though I'd love to do it. Stickers are
expensive and I can't offset the risk easily with these. The tux keyboard
sticker was a bit less risky as there are millions of GNU/Linux users who
recognize the character. We do have powered by GNU case badges though:
https://www.thinkpenguin.com/gnu-linux/powered-gnu-aluminium-case-badge
These were less risky as I could merge the risk of them not selling with
other case badges. I'm not sure if we are going to break even with this stuff
as a whole as it is. Not everything is selling that terribly well even though
we get quite a few orders every day. The problem is we have not correctly
guestimated the demand for each sticker. It could take many years to break
even if we ever do.