My Wallet...

Guess what happened to my wallet? I LOST IT! I am a very sad person now.So so so many inside my wallet.
1) Identification Card
2) OCBC ATM
3) OCBC Credit Card
4) POSB ATM
5) POSB Debit Card
6) School Adminstration Card
7) Terriary Ezlink Card
8) Secondary Ezlink Card(my brother's)
9) NTUC Link Card
10) Cash Card
11) S$ 21 + old notes S$4 = S$25
12) 1 winning ticket worth $46
13) Others
Make a guess how much the above worth together.I expected is sort of $100+++,excluding the follow ups.
So who is to be blamed?
--->LiJia? I was talking to him on the phone at that point of time.
--->My brother? I was going to his school to return him the Ezlink Card.
---> Me? I should not have taken his Ezlink card the day before.
---> Me? I shouldn't and call my brother to see if he need to use the Ezlink later,and so meet him near his school.
---> Me? I should have go home and meet him in school later.
Who to blame more? ME!!!!!