The organizers of two of the summer’s biggest music festivals would like you to know that selfie sticks are not welcomed on their concert grounds. Lollapalooza and Coachella have officially banned attendees from bringing the ridiculous looking reach-extenders used to take pictures of yourself, or as this year’s Coachella Rules and Policies reads, “no selfie sticks/narcissistics.” Thankfully, at most festivals, those hilarious giant head cutouts on a stick are still fair game …