Probably a knife-sharpening system. It seems like prep work with a dull knife takes 3x the effort. Just tonight I considered pulling out the mandoline -- I've got a fancy, expensive Bron -- but I sharpened my knives last night, so I used one of those.
Get a food processor that better suits your needs, and your kitchen. I had a KitchenAid model, I loved it because it had like a 12 cup bowl and a 3 cup bowl, with different sized blades. So I could grate cheese, or slice onions, or make a pie crust. Or, I could make a small batch of pesto. Cuisinart makes great food processors, so does Breville, but don't keep a food processor that takes up too much space, or is too bulky or heavy to move into and out of a cabinet. If you're making a cup or two of salsa, you can't really do that in a 14 cup bowl. 14 cups is awesome if you're cooking for a dinner party of ten people.
I love my blender. It's an Oster Versa Pro, and it's up there with a Vitamix. A high end blender can do things a normal blender can't. I can do everything a food processor can do, and with my foofoo mandoline I can do it better. But I could never make a silky smooth tomato bisque, or a creamy pumpkin pie, without my blender (or one like it).
For marinades and soups look into getting a blender instead.
Also, for what it is worth, I've had very good luck on the used market. I picked up a 12 cup Kitchenaid food processor with accessory kit for $50, and there are always a good selection of blenders in my local thrift stores.
I just ordered a bigger KitchenAid food processor (9 cups) as I had a small one (750mL) and I was finding it not powerful or big enough to process purées. I don’t puree everything as my son loves BLW but pasta sauces, purées, dips (I made a beetroot hummus for sesame allergen exposure), even just blending a tonne of veg into a sauce or puree I needed something bigger! I still have a stick blender but will keep that for soups!
I use mine for pizza dough all the time, it’s an approx 4 cup/650g of bread flour recipe. I also finish with a couple minutes of hand kneading, same as when I use my stand mixer.
I have an older large (12? cup) kitchenaid but I’d replace with a cuisinart or breville if I was replacing it.
My cuisinart died after 20+ years, replaced it with a kitchen aid (they had a sale, cuisinart was more expensive at the time) and I like it just as much as my cuisinart. They do the same thing so for me, they’re interchangeable
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