Kayaking is NOT a cheap sport. Unlike hiking which you can do by tossing some water bottles and a few sandwiches in your kids school backpack, Kayaking requires the purchase of a boat ($500-$1500), a PFD ($50-$150) and a paddle ($50-$100) at the minimum! So it'll cost you between $600 and $2k just to start the sport.
Then by the time you toss in all that extra gear you should have like dry-bags, paddle leashes, tow-lines and sop on, your support gear may very well equal the initial investment.
BUT, there is hope!
For we-who-are-poor, but enjoy the sport, this book tells you how to make inexpensive paddling gear from junk you'd normally throw away! Filled with almost a hundred ideas for kayak and camping gear covering 68 chapters and illustrated with 31 drawings and designs plus 274 photos, this book will aid the do-it-yourselfer to make kayak and camping gear that is, in many places, better than what you can purchase.
So dif out your tool-box, dust off your apron, wander through the alleys and be ready to brag about what kind of camping and kayaking gear you have made!