I suggest that you pick a project, and get it done. Use the most common hardware you can. Buy a labeling machine and label everything that is not known good. I

I suggest that you pick a project, and get it done. Use the most common hardware you can. Buy a labeling machine and label everything that is not known good. If you have SD cards, label cases explaining what is on them. Get a large HDD in your desktop PC (or some kind of mass storage) and back up pics, notes, code, etc. Keep it forever. Keep at least 2 copies of it. Buy plenty of plastic drawers. https://www.google.com/search?q=plastic+drawers https://www.google.com/search?q=plastic+drawers Label them with the labeling machine (1" black text on white labels work the best. If the labels do not stick, stick duct tape to the drawer and stick the label to the duct tape.) Organize every part in plastic drawers. Then pick another project and get it done. Don't give in to the temptation to rack-mount everything or to build hardware for possible future use. Just do one project at a time.