You can send us ideas for stuff you want to see or just like "hey can you make x design available as a tank top". We use print on demand so we can put literally any design on anything as long as it's not copyrighted etc.
Please keep in mind that we are two burnt out millennials and one of our core values is laziness so we might or might not get to it.
Alternatively, if you need to contact us regarding an order: dharma@millennialnihilist.com