My $1.00 seedlings labels

This is my first year when I am starting seeds inside.
I do not have much supplies and do not want to spend a lot of money. :)
I've bought plastic straws in dollar store, printed my plants names, 

 cut each straw in 2 pieces at 45` angle

 and glue a label using clear tape.

 I like my colored labels, I made red for tomatoes, purple for eggplants, yellow for squashes,
green for herbs and greens.

 On this photo you can see my 16 days tomatoes that I left the first time upstairs in unheated room,
I heard that under cold treatment regimen, you have to place young tomato seedlings in a day and night air temperature of 50-55F/10-13C for approximately 2 weeks. 
I have large bright room under my garage, it is bright but unheated. I have a small covered greenhouse (not a real greenhouse but shelf covered with plastic sheets).
Tomorrow there was 45F in the morning, but I believe the tomatoes are feeling good. 

 Please leave your comments! I know I am new, and this is my first time to grow tomatoes from seeds.