Both items can be found all over the web.
Camber can be done with a flat spot and a framing square
That being said it is a cheaper version of
this.
And I do happen to use one of these, though I did it for years with a set of tapes, string, level, and a framing square. I tend to get my alignment closer than the tire shop guys with these primitive tools. The reason being is because I care.
As far as the dent puller thingy. I get the idea. But like all PDR (Paintless Dent Removal) techniques it requires a bit of know-how on how to read a dent. Does it work, maybe, it is not the be all end all solution to every kind of dent you have. Most PDR techs will likely use spoons and other tools from the backside if they can get to it easily. These come in real handy for places around areas you can not gain access to. Think roof, hood behind the hinge point, A-pillars, etc..... Will it work on all dents, yes. It could become a very inefficient process. You might go through lots of supplies, to glue, pull, glue pull, glue pull..... And depending on the overall damage you might not get them all pulled out.
One other thing to consider, if using these on a 914 your metal is thicker than the newer body metals used on today's cars. Is it as thick as the 50 American metal, no, but still thicker than say a Honda Civic or Subaru.