Part of something I've been working on. This as well as the things it's connected to are a work in progress. Please be patient with my tomfoolery.
This is if you really are cruel. Either from your own supply or a very distasteful friend/family member, empty out a hand sanitizer bottle then refill it with a mixture of Vaseline and vinegar. Leave it to them as a "present" or offer it to random people you don't like.