I can somewhat relate. Although I was able to trace the cause of my novelty addiction to a particular job. I then built that into a career path for a bit (doing short term, very targeting consulting jobs. Most were subcontracts to larger projects) and oddly got tired of it and forced myself back to focusing on one thing. I do still find myself reverting back to always wanting to do new things. Usually I will devote a few hours a week just to doing something new or learning something new. Downtime between projects is used for learning as well. I make this a habit to feed my addiction to new things.
My first job in a R&D/Testing type role was working for an application service provider. I was responsible for evaluating new hardware from vendors before it would be released to our data centers. I had to not only test the hardware, but ensure the applications worked correctly, performance test, and document configurations. Each week was something new and I had great relationships with vendors such as Compaq, HP, Dell, and Microsoft that would constantly send demo hardware/software just so I could play. I left the job to take a position at Microsoft, and looking back regret it. I stayed at Microsoft for a little over a year for the same reason as you, I got bored. That is when I switched to just doing consulting.
But, if that doesn't work, I would look for positions in R&D for a company (that is the type of position where I traced my problem back to). Depending on the company/position you actually get paid to find and work with new "toys". Also, look at testing type positions.
My first job in a R&D/Testing type role was working for an application service provider. I was responsible for evaluating new hardware from vendors before it would be released to our data centers. I had to not only test the hardware, but ensure the applications worked correctly, performance test, and document configurations. Each week was something new and I had great relationships with vendors such as Compaq, HP, Dell, and Microsoft that would constantly send demo hardware/software just so I could play. I left the job to take a position at Microsoft, and looking back regret it. I stayed at Microsoft for a little over a year for the same reason as you, I got bored. That is when I switched to just doing consulting.
But, if that doesn't work, I would look for positions in R&D for a company (that is the type of position where I traced my problem back to). Depending on the company/position you actually get paid to find and work with new "toys". Also, look at testing type positions.