Jars& Lids - quantity depending on how many spices you'd like to store. I bought 60 for $50 incl. shipping
Magnets 2 per jar: I ordered the 1/2" x 1/8" but I ended up needing 2 per jar [perhaps you could upsize and get away with 1 per]. Paid $25 for 100 w free shipping.
Refrigerator or stainless steel plate: check out this guy's spice rack for a metal link
1. Label the underside of the jars with Sharpie corresponding the spice you'd like to fill with. The beauty of the Sharpie is that - on glass - it's erasable with water, so when that '10's craze for smoked paprika is over, you can change the jar.
2. Put 2 magnets on the underside (spice side) of each lid. These suckers are strong and hard to pry from their stacks.
3. Fill up your jars.
4. Make sure each one passes pug inspection.