Here are two great youtube videos to educate your children about strangers, as it is important to teach your children to only play with blindfolds when a trusted person is around.
Minors must never allow themselves to be blindfolded by a stranger unless it’s a leader at church camp or youth camp where the organization is trustworthy. If a stranger want to blindfold you and take you on an adventure do not go. Ok note to Australian readers I am a Christian who thinks paedophile ministries must be weeded out and turned over to the police, if a minister wants to be alone with your child, leave and never return.
This website advocate blindfolding children but strictly in the context of games and sensory play.