I’m currently using a very light two piece carbon kayak paddle made by Werner, which was a very generous gift; if you’re making or purchasing a paddle, I recommend choosing a four piece design because it’s easier to pack.
When it comes to paddles, spending more money generally gets you a lighter, stiffer paddle. Depending on the type of paddling you want to do, an inexpensive lightweight aluminum and plastic paddle may be ideal (for paddling on smaller lakes, e.g.). If you’ll be battling strong winds or whitewater though, a flimsy paddle is not an option, which means you’ll need a heavier or more expensive paddle.
A while ago I wrote a blog post featuring a DIY carbon fiber paddle made by DIY Packrafter Andreas H. Because carbon fiber tubes and sheets are so expensive, I haven’t really considered offering paddle kits in the shop, but maybe one day I’ll be able to afford it…