Ah, that's a tough one! A bicycle is a pretty big gift, so you'll need a lot of wrapping paper. Make sure to measure the size of the bike and the wrapping paper beforehand so you know how much you'll need. Then, you'll want to start by wrapping the frame in a layer of wrapping paper and securing it with tape. Next, you can wrap each individual part of the bike, such as the handlebars and pedals. Finally, you'll want to add a bow or other decorations to make it look festive and fun.