I do have one I've never seen other folks do. For several foods, I buy in bulk, prep and then freeze for later use. Yes, that part folks do, but not in this context. For things like Onions, peppers both hot and green/red/yellow/orange, I'll buy a lot of them or grown them, do all the prep and then freeze them in ziplock bags for later use. I just did 40 pounds of onions last week (gave most away). Once diced and frozen, just either hit with a solid item or bang on the counter, and open the bag to dispense what you need. Cook as usual, and reseal the bag and put it back in the freezer.
For Jalapenos I do basic prep (clean and remove stems). Then freeze, and once frozen, put the cheese blade in the food processor and run them through that frozen. Put the resulting powdered peppers in a bag and keep in the freezer. Now all that prep work is done any time you want to make something with those items. Not gonna work for sutff that requires being fresh, but to be honest, I rarely use those items without them being cooked so I really don't care. This covers move of my uses. (like 95%).
I also keep my fresh ginger in the freezer in a bag, but that I just peel and do what I need on a Microplane. That works great too. It'll ruin a microplane every decade, but, just buy a new one. :D
Another item little known, and there's loads of videos on it, is using baking soda in the kitchen. There's a zillion things it does, not the least of which is it transforms ground beef/chicken/pork or whatever. Reduces onions in minutes, works for beans, cooking dry beans, you name it. Indespensible. Good video is What's Eating Dan (From America's Test Kitchen) on baking soda, but there are many others.
And don't forget baking powder for poultry prep. It does poultry skin like nothing else. See Serious Eats for that article.