Here I am with a Christmas gift for you!
Full parts lists for every single model included in Tiny LEGO Wonders are available as free downloads!
Just download, print out, and check piece by piece what you already have and what on the contrary you need to get.
...or to make it even easier you can download Wanted Lists pre-made. Just upload them to Bricklink.com and you are ready to place your order. It can't be any easier! (Bricklink order tutorial is included)
Enjoy and... Merry Xmas to you !