I went to Orchard Supply Hardware to find what I was looking for and found it in one of their aisles... not aisle 14 though, I just HAD to snap a pic of one of my favorite named sections. ;) Unfortunately, OSH has since been acquired by Lowe's and they made the worst decision ever to close down all locations. I can continue on a rant, (where else will I find my "Wha-cha-ma-call-its"?!?) but I digress...
Instead, you can find tape at any other hardware store (Home Depot, Lowe's, Tractor Supply, etc.) and I'm sure Amazon will have what you are looking for.
Otherwise, if you're in a pinch, use what you have and any clear packing tape will do. Just keep in mind it may not stand up to seasonal weather conditions depending on what your climate is like.