2. You can buy from other players.

3. If you really can't get it, you can eat someone else's. Some people can have a party or something for free. Whether you can grab it depends on your luck.

4. Some people open restaurants or sell them in restaurants, and eat them on the spot after paying the money.

You will get a panda hat after eating the panda menu, but if you change the hat, the panda hat will be gone. (Okay, this seems like crap.)