I bought some lime essential oil to make bath bombs and was expecting it to smell like lime juice. Once I opened the bottle, I was reminded of all the green sweets I spurned as a child. For this reason, I added some sugar stars to the mix.
I added a fair amount of green food colouring to the mix and they looked lovely and E-number heavy when I first made them. Now they've dried out, you can't really tell that I added any at all. I've learned for next time, though.