When I get coupons from stores I use an elastic to keep the coupon in the same place as the card - whether it is CVS Stop & Shop etc. I find this very helpful. Recently my elastics got brittle and popped! They were old!!! I needed new elastics. I am very pleased.
FINALLY FOUND REAL RUBBER BANDS. They are strong and wide. It is better then those skinny rubber bands our there. It will take a lot of force to break the \m.