You will need to purchase battery holder and multi-color LEDs from Amazon: https://www.amazon.com/dp/B09B1X64HW?psc=1&ref=ppx_yo2ov_dt_b_product_details and https://www.amazon.com/gp/product/B01C19ENH8/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
You will also need to print STL file 'Compact Bracket', found on my Etsy site: https://www.etsy.com/shop/FairOaksDesignLLC?ref=seller-platform-mcnav