My 11 year old uses: Luxja Diabetic Supplies Travel Case, Storage Bag for Glucose Meter and Other Diabetic Supplies (Bag Only), Black https://www.amazon.com/dp/B07H81KD1H/ref=cm_sw_r_apan_i_0A2N5ECMAVT34H4Q268X?psc=1

Inside of a mini vans bag...

https://www.vans.com/en-us/accessories-c00083/got-this-mini-backpack-pvn0a3z7w56m?utm_id=go_cmp-2081948099_adg-105234544963_ad-452935660205_aud-298697714763%3Apla-929965336696_dev-m_ext-_prd-VN0A3Z7W56M_VN%3A0A3Z7W%3A56M%3AOS%3A%3A1%3A_mca-8181713_sig-CjwKCAjwloCSBhAeEiwA3hVo_QizQmlWqP35FZ8S2cCYVUk-OOBrbSvvjBqr8iqBUzbvhQjo-kXZVxoC768QAvD_BwE&utm_source=google&radscid=2081948099&gclid=CjwKCAjwloCSBhAeEiwA3hVo_QizQmlWqP35FZ8S2cCYVUk-OOBrbSvvjBqr8iqBUzbvhQjo-kXZVxoC768QAvD_BwE