What do you do with used spice jars (not the plastic ones)? Clean them up and then you can use them to store your own dried herbs, other spices, spice mixes or rubs and any other small craft item (like beads).
I also use jars for storing my rice, grains, beans, nuts and other baking supplies. Being able to see the item and having it labeled makes it so much easier to find in my pantry. I love the rustic look too. These jars look great and do not cost very much. You will also save money by buying the dry beans instead of canned beans and avoid BPA in canned foods. These make great gift ideas as well. Measure ingredients for cookies, brownies, hot cocoa into the jars, seal, add a nice cut fabric or a ribbon and a label. Now you have a great gift item straight from your kitchen to theirs.
Now let's organize the bathroom with your glass jars. Store your band aids, Q-tips, cotton balls and any thing else you would like. If you have a beach/ocean theme decor you can hot-glue a seashell to the top. I even display some seashells that I found and collected as a child. Very simple decor that also is unique and memorable.