There's a chance I can do recreations of some of those shirts! Come With Us would be the easiest. There is a great shirt printing company in Chicago called OneHourTees that can do custom designs starting at $6, as long as you're okay with waiting 7-10 days for the order. They might be able to do big designs like those limited Kate Gibb prints.
At the very least I'm going to make Nous Sommes Le Pouvoir and other Chems-inspired shirts available too - will help pay for backend ChemBase expenses. I have the next month off so I'm finally not making an empty promise. Just got to find that old hard drive!
Never for money, always for love.