Whenever I reel the line and leader onto an extra reel spool it somehow unwraps itself from the spool. I was in Walmart yesterday and found these velcro "one-wrap" straps for $2.99 for six straps. i simply wound the line and leader back on to the spool and inserted the tippet end into the slot in the strap and wrapped the strap around the spooled line. No more unspooling!
These one-wraps" are 15 inches long x 1/2 inch wide. Length can be shortened as required.
"One-Wrap" installed on reel spool.