Tavern Keeper's item design tool is so good one player made a tabletop D&D set where you can actually read the stats on the character sheets

That's an astounding level of detail for a tiny prop in a tavern management sim, and it really highlights the power of the ...
GitHub

dnd-tools

A TTRPG program to help DMs with trading. Create places and items with base prices. Program will raise or lower the price, along with ways to fine tune prices.