Organizing tips passed on to next generation

I have been doing this to my exercise books since I was in primary school. I find that it's a "no brainer method" for packing school bag and also it's faster for me to get the books out from my school bag without moving from my chair.

 Yes, they say lazy ppl are very creative. I am one of those. I have passed this organizing technique to my eldest since last year cos he came back with black knees everyday and when I asked him why, he replied "because I have to kneel on the floor to find books in my bag". This year he planned what colour for which subject. Noticed that the reddish pink one is smaller compared to others. That's because... *whisper* that particular teacher is more fierce so we don't wanna make it so obvious that we are lazy. He he he he