This is a great project for a simple bench to put outside in your garden or around the campfire. You can either stain it or let it "gray" naturally. It cost me about $45 at the local hardware store.
First, you have to gather your supplies. You'll need
8 cedar boards 1x4x16in (six with curve cuts if you want for the seat)
8 cedar boards 1x4x47in
4 cedar posts 4x417in
56 2-in deck screws
32 1 1/4-in deck screws (for seat slats)
and 1 qt. exterior oil finish if desired
I bought 6 -- 1x4x8' cedar boards and 1 -- 4x4x8' cedar post and had plenty of wood for the project, seen in the picture.
Secondly, you'll cut the boards to the desired length stated in the previous step and seen in this picture.
This is the most difficult step creating the curves in the seat. This step is optional and you could just create a flat seat bench instead. I took a 1x4x16 in and marked out two points on the edge 2 3/4" from the bottom, then in the middle a point 1 3/4" from the middle. Next part you might need a buddy to help you with. I took a bendable ruler and hit all three points creating a curve and drew the line. I then cut the board out on a band saw and used this board as the template for the other 5 boards you'll need to cut. Once finished I sanded them down a little but not a totally needed.