I use Carpet Adhesive tape as well

It has an advantage on tit tape in that it's really strong plus it's not transparent so in the unlikely event that your pastie comes off your nipple is still covered.
There is also spirit gum but you need to check to make sure you don't have an allergy to either the gum or the remover. Some people use latex adhesive and I have heard of people using toupee tape as well.