Once you have collected an NFT, or have been included in a split you have the option to hide the NFT on your profile.
Here are the steps:
From your profile page click on the ... on the artwork card and there will be an option to Hide NFT.
Click on "Hide NFT"
Once hidden, the NFT will be displayed in a tab on your profile called "Hidden"
The hidden NFTs will only be visible to you when logged into your profile
You can Unhide an NFT by simply clicking on the ... on the artwork card when you are on the Hidden tab