Love it! Great little showcase for Kwyll, I think.
I downloaded the .tap file and ran it on a 48k emulator. The only issues I had is that the display for the presents didn't reset after I completed the game (when I restarted the game, it still showed collected presents in the display) and also the 'well done' didn't stay on the screen long enough! I think I may have pressed a key by accident, so maybe, if it's set to disappear after pressing a key, you could add a delay so you don't miss the message?
Really enjoyed the game overall, thanks for the Christmassy fun!