So far I've been able to find 93% of the items in this game, but I am still missing 7% somewhere. I have a few ideas how to get these last items though.:

• It might be that an item or items may be unlocked after beating every mission with an A rank. I've cleared just over a hundred or so of the 118 missions with an A rank, but I'm stuck on the last few as they are a little tricky to get A rank on.
• Some items are hidden and you are supposed to use the 'Metal Detector' item to find them. The 'Metal Detector' is supposed to make your phone vibrate when you are near one of these hidden items. As I am playing on emulator, I can't use the vibration feature. I've already found 5 hidden items just by going around some missions and pressing select everywhere, but these 5 were easy because I knew which 5 missions to look in for these items. Perhaps there are other hidden items that are in other random missions. If anyone knows how to emulate vibration for J2ME games or has a J2ME phone that can play this game, we would be able to look for these items. Alternatively, we'd have to go through every mission and press select on everything to find them which would take a while.

Update: There is an emulator for Android that works perfectly including vibration, so that can be used in conjunction with the metal detector item to look for more hidden items!