After EOS main-net has started, many air-drops are distributed to the EOS wallet.
Here is the site you can find what kind of airdrop is distributed to EOS holder;
https://eospark.com
Enter EOS public key or eth address and then click the user id. After that click the token. Then you can see the tokens what you have. Like this;
I think that there are 4 air-drops on EOS wallet so far.
If there is missing airdrop, try to find the way to get them.