My sister's hard drive in her iMac died. Places like Frys don't even have a spudger! They have lots of tools but no good spudgers. Trust me, I've looked and asked.
It was great. I could have just yanked off the heat sensor with my fingers, but a spudger helps you be more delicate with small breakable parts.
Spudgers are so cheap, just get one. You will feel more techie, and you won't accidentally bend or snap any tiny metal components or wires while you repair stuff.