This week's question: Can I somehow make the catalog remember what I've checked out, even after I've returned the items?

That's what My Reading History is for. To turn it on, click the My Reading History  button in My Account. You will then see a button that says Activate. Once My Reading History is activated, the catalog will begin to keep a chronological record of the items you check out, with the exception of items borrowed through Interlibrary Loan. You may delete titles from your My Reading History list or de-activate the service at any time by clicking the My Reading History button and then the Delete or Deactivate button.