My R&D "Lab" is really just my home office.
I have 3 stations, each of which is a total mess:
Here's where I do all my experimentation. The bug boxes are my "store room":
Here's where I do all my soldering, etc:
And here's where I create all the code (using the PC at the far left).
A key part of this is my DB25 interface (the thing with the plywood base):