Hi, Karen, for the groundbreakers I started out with a square piece of wood and the frame of the groundbreaker is made of PVC pipe. I attached the PVC pipe using corner braces that I picked up at Lowes (Made by Stanley 3/4 x 1/2) about 4 of them in a pack. You can attached one end to the PVC pipe and the other end to the wood. Depending how sturdy you want the frame you can you 2 or all 4. For the rib cage I used an old garden hose that I cut into different lengths and attached the ends to the PVC pipe using screws. I bought plastic skulls from Target and attached it to the PVC pipe. After the frame was built, I used papermache using newspaper to wrap around the ribs and PVC pipe arms and neck. The more thickness you want the arms to be the more papermache you want to add. After it drys, stuff the inside of the ribs with newspaper and then use papermache again this time using paper towels to cover the entire body so it looks like skin. The nice thing with paper towels is that you can press it a certain way so it looks like veins under the skin. After everything is dry I used Drylock paint which I found is great for waterproofing even over papermache since it will be outdoors. I used Great Stuff for the base so it looks like it is coming out of mud or dirt once you paint it brown. With Great Stuff you have to watch that you use a little at a time because it expands a lot and you don't want to get it on your skin. I also rub the Great Stuff (using gloves) on the groundbreaker after painting it with the Drylock to give the look of gooey skin. Once that is dried, time to paint. I hope this was helpful. My son did a school project building his own groundbreaker and had to take pictures of all the steps. I still have them if you want me to show you any of the steps. I just don't know how to send them without having to post them on the site unless there is a way to just send them to you directly. Also on youtube and Hauntforum there are people that have video's on making groundbreakers, maybe not what I have done exactly but some elements of it.
Karen, If there is any construction work going on in your area.... you could go to the construction site and ask the project manager. The big huge blocks my husband got came from a freeway overpass blunder. I wish I could upload my pic's but for some reason they wont. Anyway.... find construction site's or Freeway & railroad bridge work and you may be able to find scrap's. What state do you live in?
I wish it had been written when I started as it would have answered a lot of my questions up front.
Read that and then I'll try to answer any new questions you have.
The first step to choosing a controller is to figure out exactly what you need it to do and then choose something that can get the job done. There are a lot of great boards out there but sometimes you don't need all the features they come with and that you have to pay extra for. If you know how to solder or are willing to learn, there are a lot of options that have been designed by haunters to solve most of the needs we have in our haunts.