I've just ordered a Tamagotchi V3 wave off ebay, it's brand new never used, I really want to play with it but I don't want to open it, do you guys have any suggestions?
I think you answered your own question; definitely open it!
If you want to keep the package to put the Tamagotchi back in later when you're no longer using it however (which is a smart thing to do) and have it look as if it's still sealed, using a craft knife or other similar tool to perforate the left, right and bottom sides of the back of the package always works for me. Then you just lift up the plastic cover on the back, remove the back card and you have easy access to the Tamagotchi. Put it all back in place, and it looks as good as new.