I'm thinking of trying Go, and some other games you can play with the grid and Go stones, by getting inexpensive but acceptable stones and printing out a grid. Is there any reason this won't work?
And if there isn't...should I prefer one size of stone?
I would recommend to get a set of basic, inexpensive 20 mm glass go stones. I prefer biconvex (Japanese and Korean style) sones over the Chinese ones that are flat on one side. I have multiple sets as they have been included as generic game pieces in various abstract games I have.
My Korean stones are a little more irregular than my Japanese and a little less expansive. However, that may have changed.
A set of glass Go stones is a very versatile and nice generic game component.
Regarding the board - just print a 20 mm grid of the relevant size on paper.
Great and clear reply, thank you.
And thank you to all for the other helpful replies.
Somewhat inspired by Mini Rogue, I've created a variant for Quests Over Coffee that sets out the quests as more of a journey and gives the player a little more agency. I've play tested this a few times with family, and it seems to enhance the gameplay, albeit at the expense of a little more table space.