AARPMichaelPContributor ⭐⭐Forum|Forum|6 years agoMay 27, 2020Tennis Ball Jar OpenerForum|Forum|6 years agoMay 27, 20200 replies3872 views Make jar opening easier with the use of a box cutter or sharp knife and a tennis ball. Slice around the tennis ball and use the cut out piece to get a better grasp on jar tops.caregivingpersonal careday to day activitiescaregiving tipcaregiving hackjar openerjar openingkitchenkitchen hacktennis balltricks