I've come to the realisation, after playing sims with all nasty traits, that not even traits matter when achieving my sim's goals or keeping them happy and well-fed. I find money cheats and mood cheats make the game boring - I've even given up using the moodlet manager and the motive mobile (which makes cheating needless anyway). However, I do use the change traits or edit in CAS cheat if I have forgotten to save my sim to the simbin. It saves a lot of loading time to just change the traits on a pre-made sim.
Aside from that, I use the building cheats frequently. I wish the game had a button I could press for 'placeFriezes', 'constrainfloorelevation' and 'moveobjects'. (now adding that idea to the ideas thread!) I know there is a non-legitimate way to asign shortcut keys, but I don't want to mess up my game. Oh, and buydebug. There's some marvellous decorating things in there. And, for better screenies or photos you can use the lighting.
I obviously use the 'resetsim' when needed, though when I'm not playing a challenge I might occasionally reset a burglar...
Whilst testing out strategies or finding out about game mechanics for challenges I've used make needs static (in the testing, not the challenge!!!) but that's only a recent thing for me.
I thorougly enjoyed using teleport for the upgrade challenge - that was another first for me - and was a little disappointed at going back to normal travel, but on the whole I find the game much more fun working my way up from nothing.