I tend to use glass jars for this. They are reusable and recyclable, you can see what’s in them, they protect what’s inside from getting crushed, and they’re free if you repurpose jars that food came in.

LibreCAD could be worth considering. I don’t think it’s possible to update dimensions in it though so I expect it would be tedious in a large project like a home remodel.

Exactly. The correct way to answer is to not “yes” or “no”.

It doesn’t lead to a destination, and maybe isn’t even a riddle, but a sentence I like is:

Is your answer to this question the same as if I had asked you to give me a dollar?