OEM Honda front brake return spring - these are on the CRF110’s but they work on many other bikes such as the XR/CRF70 all the way over to the KLX/DRZ110.   It puts some resistance on the brake arm at the hub and makes the front brakes release much easier.  We run these springs on almost every one of our bikes with drum front brakes.  A simple cheap upgrade or just a replacement spring if you have lost the original one on your CRF110.