Normally we would have to find it by rolling the tape and touching the entire perimeter to see the "undulation" and then we would have to strip the tape from its holder. How do I ask someone to give me the end of the sellotape strip?
You might want to say something like:
Can you find the end of this roll of sellotape for me please?
I can't find the end of this roll of sellotape! Can you do it?
I can't find the end of this roll of sellotape! Can you find it for me?