For both of the methods I will show, all you will need is a roll of athletic tape and a pair of scissors. Although you can buy athletic tape at any Shoppers Drugmart, I prefer the tape that you get at physiotherapy clinics, as the adhesive tends to be of better quality, as well as the tensile strength of the tape itself.
With any taping, be sure not to wrap the tape so tight that you restrict all blood flow to the finger. Your finger should not be dark purple, and when you pinch your fingertip, the colour should easily return after releasing the pinch.