This weekend I almost drove off without raising one of the tongue jacks.  The .99 Cent Store had these 2-packs of 'Reflective Safety Wrist Bands", and they fit the bottom tube of the jacks perfectly (just snap on).  Really catches the eye, and bonus of adding reflectors on the very tongue area if your in a tight campsite were your tongue is itching the roadway.  Ended up putting them on every trailer I own.