Congrats on the lucid! I would love to be able to naturally lucid dream! I am the same when looking at my hand in a lucid dream, usually I have a few more fingers than usual, other times my hand has just been a fuzzy blur and other times my fingers have been importunately sized. I haven't had much luck with summoning things yet.. might try your method in my next lucid, (whenever that is lol)

Also, funny you should mention it but in last nights lucid I was in a shop, (I generally always become lucid when I am there).. I walked through the closed door and emerged on the street.. and the difference in temperature was startling! It's the first time I have experienced this in a dream.. it was freezing and I could even see some flakes of snow in the air..