These are interesting. I actually really like the mystery and fashion of the Free Yourself shirt, I'd wear that and enjoy no one really knowing what it was! I just have too many black t-shirts...
Perhaps there are copyright reasons for that, but man, I'd love it if there were some nice album art inspired shirts available. Like a Kate Gibb Star Guitar or IBIA LP motif (or anything Kate related to be honest) or that Negatice Space motif with that yellow seashell from Elektrobank.
Absolutely agreed. They've done some in the past, most recently w/ Uniqlo. I have the Hey Boy Hey Girl one and it's one of my favorite t-shirts:



Kate Gibb also sold a bunch herself that were COMPLETELY TOTALLY AWESOME in 2014, that sadly aren't available anymore:

I mean, just look at the We Are The Night and Come With Us ones.
EDIT:The above t-shirts were printed/produced by Graniph, who are still working with Kate Gibb - here are all her current collaboration items with them, including a large alternate version of the Star Guitar artwork:
https://www.graniph.com/shop/e/ec-kategi/
Maybe we can stuff Graniph's inbox with emails, and they might make more Chemical Brothers / Kate Gibb items available again?
Never for money, always for love.