Creating a general SO MCVE question is described here and more specifically for R and Python's Pandas (as examples), but creating a MCVE doesn't seem as straightforward with Excel.
Frequently an Excel tagged question's examples are just a screenshot of a table and/or the formula bar, and repliciting a question or answer can be challenging and frustrating. Reproducable questions are more likely to get answers and are more useful to people that find them later.
How does one create a great, reproducible example for an Excel question? Is it possible to create a minimal Excel table/dataset in a SO question? How should formulas or chains of instructions be written? What could be encouraged and what should be discouraged?