One shots fall under the category of DIY (IMHO as always) in fact, they can be a fun and easy way to start the DIY process. Many don't need steeping, some benefit from a slight steep, but for the most part (although I often feel, and find out) easier than doing a flavor batch of individual flavors, it's also possible to improve a shake and
vape mix in a variety of ways. But, it's still DIY, and it can be a great way to get started.
Good luck and if you have any questions, well you know where to go! I hope it goes well for you.
Anna