Your interactive post asks for money and has a disclaimer about "willing to give credit card number to an organization I trust". I think you might need a little more confidence here to ask for actual money, or perhaps a little more description on the other end.
"Buy this thing that might not work and I haven't described to you but could be amazing!" is a pretty big barrier to participation.
I wrote an interactive blog post, How To Increase Conscientiousness, which has some steps which I think might increase your conscientiousness. I'm not sure if it works, but I would love to see some curious low-conscientiousness people try it and post your results here.
If you do it, please do it before reading the comments on this post, as they may contain spoilers.
If you are feeling especially helpful, also take a Big Five personality test like this one and report your percentile result on Conscientiousness.