Why buy a regular speaker when you can purchase one to build yourself? The Celia & Perah DIY Bluetooth Classic Radio Retro Mono Speaker gives you something to do while teaching you what’s inside your gadget. It’ll arrive as laser-cut pieces that you then put together. Thankfully, it’s easy enough for anyone to construct this DIY radio, and it takes less than an hour to do. With a wood frame, the radio can come with a black or white front. Either way, it’ll measure about 10 inches long, five inches wide, and five inches tall when you complete it. When it’s all said and done, it’ll play music wirelessly for a full 5.5 hours, and it takes just 2.5 hours to recharge completely.