Bueno Drops offers an easy-to-use airdropping tool for those that wish to mint tokens for their collectors. To access airdropping, select the token you'd like to airdrop from your Manage page after contract deployment. Then, scroll to the bottom of the token settings side bar.
You'll be given the option to airdrop to a single wallet, or you can upload a list of wallet addresses.
You will have to pay gas for airdrop transactions. Keep in mind that the more wallets you airdrop to, the higher the gas fee.