Start with a bunch of empty, clean baby food jars (probably a good idea to make a list of the spices you have on hand and add them up to be sure you have enough jars.) Then, using a cotton ball, swipe the jar lids with apple cider vinegar (this helps the paint to adhere to the metal) and put on wax paper to dry. Next, use a craft paint of your choice to paint the jar lids. I did two coats just to really cover the metal, but one coat gives the lids a distressed look and is also cute!
While the lids dry on the wax paper, go to your computer to create the labels. You can download the template I used (along with a bunch of other coordinating labels!) here: http://blog.worldlabel.com/2013/kitchen-spice-jar-pantry-organizing-labels.html. You can open the file in Photoshop or Acrobat and fill in the labels using your aforementioned spice list. Here is a picture of the pre-filled-in labels from the website: