Another way to save the end thread

A while back, I know I shared I love Wonder Tape for tidying up the end of thread on thread spools that don't have their own effective thread end holding mechanism. Another, incredibly inexpensive way to secure loose thread is a gummed reinforcement for notebook paper. These are often referred to as donut holes and cost almost nothing.
Update: Thanks to the blogger that said she also uses donut holes to hold the ends of thread on bobbin spools.