You no longer have to be stuck with the limited set of club icons provided with Get Together. I bring you a mod that adds a total of 230 new icons for you to choose from, extracted from the base game, Get to Work, Outdoor Retreat and Spa Day. While a handful of them are similar to the icons already available, the vast majority are completely different.
You can download the mod here: http://zerbu.tumblr.com/post/136066539942/the-sims-4-get-together-mod-more-club-icons