The souvenirs are:
01 passport
02 key1
03 key2
04 map
05 text book
06 computer
07 medal
08 cell phone
09 bicycle (BMX)
10 skis
11 palm tree
12 surf board
13 panda bear
14 maracas
15 ring
16 cape
17 crown
18 skateboard
19 baloon
20 baseball cap
21 teddy bear
22 tamagotchi
23 rare disc
24 rare shoes
25 poster1
26 poster2
27 poster3
28 BANDAI
29 mic
30 suitcase
31 trophy
32 ? ? ?
Number 32 hasn't been found yet.