Playing around with this stuff is actually fun - a milli-litre of this, 10 ml of that, hmm, maybe 3 drops of #3... shake well, wait 2-3 days, try. Oh, and being able to achieve sensible levels of nicotine (the EU has made this impractical, if not outright impossible (google "TPD2"), but there's webshops that just don't care, so I've now got reserves to last me a couple years at least).
Currently on coffee+vanilla+cinnamon. Though not even close to beating the professionals (mm, creamy vanilla pudding).
Also, for the lulz or whatever: SWMBO (who quit smoking nearly a year ago) has now required me to vape in the living room, because she likes the smell.