I'm not much on gadgets, but my go to ruler is the June Tailor Shape Cut ruler, then my 4x13" ruler, 6x24 ruler, 24x36 mat and 45 mm olfa cutter. I do have other rulers that I've gotten at yard sales, etc., but rarely or have never used them. My scissors are Fiskars, the ones with a spring.
I almost forgot my snips that I get from this company:
http://www.mygoodscissors.com/ThreadNippers.htm #6204, haven't used a seam ripper since I "discovered" them about 10 years ago.