If you use masking tape and accidentally leave it for days or weeks (oops!), use the hair dryer remedy to warm the adhesive before peeling. First, gently heat the tape with a hair dryer.

Very cool! The only issue i see is that masking tape generally not made for sticking too long due to its primary use case. Putting some other tape (e.g. white Duct Tape) on would be pretty cool though ...