I just like the presentation of these. I probably wouldn't do the strawberry one because it is too much effort but the apple one is pretty neat. And yes, I know you don't have go super "girly" on the drinks, but when I make a special drink for a party I like to do it well.
2 Fridays ago I made this for a party we hosted: http://www.epicurious.com/recipes/drink/views/Basil-Vodka-Gimlets-238926
. It was very popular with everyone. I am actually planning on infusing my own vodka with some basil so that way I can skip making the simple syrup and just add some lemonade.
I thought about making Jello shots for the party but decided that they were too "Frat boy." The Caramel Apple ones come off as more sophisticated simply because of the presentation. I could have made some blended fruity drink (Sex on the Beach) but I figured a cocktail was a nice alternative and comes across as more refined.
As for Kahlua, I can't stand the taste of coffee, so no.