Smelly Jelly Kelly

I've mastered the art of the smelly jelly, as well the art of being a poor graduate student, so it only makes sense to master the art of gifts on a budget.  Using jars, smelly jelly crystals, and fragrance oils found here, water, and some old food coloring that's too old for me to want to eat, but not too old to look pretty in stuff I can't eat, I made these:

Fragrance oils are $2.60 an ounce (about 30 mL), which contributes to 2 jars and a little extra for some lotion experimentation (I use about 14-15 mL per jelly jar).  A set of 12 jars (including the metal slitted lids and the plastic lids to keep the fragrance in until you're ready to use it) sets you back $14.29, but you could use any old candle jars or old jelly air freshener containers you have around, or re-use the 12 from this site (like I do) when your jellies dry out--just clean it out and make a new one.  One pound of jelly crystals only costs $6.75, and this is enough to make 80 jars.  So really, one jar costs about $2.56 to make.  And they smell awesome and like anything you want (there are TONS of fragrance options), plus they're really cute.  Score.

These fragrance oils can also be used in candles, which might be my next adventure in the summer.  If I can nail that down, I'd save a lot of money that currently goes to my candle obsession (though the air freshening smelly jelly jars do help abate that).