I second the buying extra parts to build up your stash. I'd pick a few PCBs you'd like to build, create a combined parts list. When you order parts, order extra resistors, caps, leds, knobs, ect. The next time you order you can run through what you have before you order. After a few cycles of this you might have enough to build without ordering. Wouldn't recommend ordering extra pots....no matter how many I have in my stash, I always have to order at least one, lol, so it's not worth the extra storage and cost.
The goal is to avoid ordering from multiple vendors, the shipping costs add up. I always need a Tayda order, so, I also have a list of things I'm getting low on and Tayda sells. When I order caps or chips from Mouser, I usually buy in bulk. Both for the bulk discount and to only order from them a few time per year. Small Bear and other specialty vendors, I try to order for multiple projects or buy in bulk for stuff like chips.
The goal is to avoid ordering from multiple vendors, the shipping costs add up. I always need a Tayda order, so, I also have a list of things I'm getting low on and Tayda sells. When I order caps or chips from Mouser, I usually buy in bulk. Both for the bulk discount and to only order from them a few time per year. Small Bear and other specialty vendors, I try to order for multiple projects or buy in bulk for stuff like chips.