How to attach graphics to frame
If you want to use tape, then you want to use what's commonly called "helicopter tape" (or "racing tape" or "repair tape") by car customizers. It looks like transparent packing tape but is much stronger. The story goes that the tape was used to cover the leading edge of helicopter blades to protect them. So it's tough, waterproof, and won't easily peel. And when you do have to peel it off, it comes off relatively cleanly (the remainder cleans up with GooGone or similar removal liquid).

That said, you need to be careful of what you're covering. Even with helicopter tape, some moisture always finds a way of getting underneath into the paper so it should be printed with waterproof ink. And UV light will also fade. So you generally shouldn't just use something that's coming out of your home inkjet printer.