The best thing you can spend on your kids is time..
Your time is so precious to us.
Photo source:https://www.google.com/search?q=kids+playing+with+parents&client=ms-android-huawei-rev1&prmd=ivn&sxsrf=ALeKk01GVMuj9F_UktvLDKneMmclM8OTxg:1602713931402&source=lnms&tbm=isch&sa=X&ved=2ahUKEwiHyLrUjrXsAhUUH7cAHahBDmoQ_AUoAXoECBIQAQ&biw=424&bih=779#imgrc=fP2NxF8uLkaBUM