What are good wood species combinations and which ones you would never put together in one project

[tibi]

Hello,

I have currently oak, beech, and cherry in my workshop and I was wondering if those woods could be combined together in a single project (not all of them, but two of three). That idea leads to my question:

What species of common hardwoods (not exotics or Australian woods) make visually good combinations and what species you would never combine in a single project? If you have some photos of your past projects where the combination was good-looking, you can share it.

Thank you.