When I first started making soap I did HP because I couldn't imagine waiting another 4 weeks to see if it really worked, lol. For that I used 12" peices of PVC downspout from Lowe's. (you could use that for CP as well, just be sure one end is sealed very well with plastic wrap and duct tape) By the time I decided to try CP, I had bought wooden molds. There are lots of things you can use though. Rubbermaid drawer inserts/separaters from the supermarket work well. I use the square ones for test batches. I even use the bottom of half-gallon plastic milk cartons to make very small, highly colored batches. I then shave those down and add the shavings to an uncolored batch to make it more interesting. There are many things that you can use for a mold today rather than waiting to order one. Good luck with your CP!!