A paper clip can be used to open any lock. That's what MacGyver and a few nice instructions on YouTube have tought us. Well, when you actually try it, it's really useful. Can a paper-clip uncuff? Yes, it can. In Poland, tax payers can transfer 1% of their income tax to a charity of their choice. We left these clips in offices and company reception areas across the country to inspire donations to Amnesty International.