I'll have a Dragon Quest Builders 2 postgame save I can in a bit (with minimal building/terrain changes so others can build with minimal tear-down. Also has a good supply of the first boss's banana peels that cant be normally be obtained outside of abusing the final town rebuild phase after the battle).
The one caveat is I would like to request that a user with SXOS or another setup capable of RAM edits/cheats add a single Builder's Bell item to the inventory (as it was able to be duplicated before the 1.4 update, but a patch before localized release made it impossible to duplicate during the story event. Placing the item is required to progress and you cant retrieve it later for duplication. It's still possible to import a Japanese save with the duplicated item from before 1.4, but getting access to such a save is nigh impossible). Once that's fulfilled, the save should be able to supply almost any design's needs - minus a couple pre-order and prequel save bonus items.
I can supply all needed info/codes for adding the item. The only thing I dont have is the ability to use the code myself. We can arrange things via DM if needed.