Shining a laser at ANY aircraft is a felony no matter what and they will prosecute you to the fullest extent as well. it is a HUGE danger to shine them at aircraft’s and for those who don’t like the beam will make it up to a aircraft you are VERY wrong. its also VERY easy to find the person who did it, even from up in the sky
As far as building, it easy IMO for certain ones. Parts are starting to get tough since one of the main suppliers shut down due to getting a new job 
as far as burning, it all depends on what you mean buy burning; light a match, pop a balloon, light a 2x4 on fire, etc……