both hockey tape (stick/grip tape) and inner tube work....
if you like getting off your bike with sticky black hands.
only inner tube will work if you like black hands plus not being able to grip the bars while riding in the rain/if they get wet.
if you are really in a bind, go for the stick/hockey tape and try to pre-rub the tape a bit to remove the adhesive a bit. it grips tight and holds up beautifully in the rain though.