This is such a clever mechanic! I had a blast seeing what can get cut up and sucked into my vacuum before launching them into the truck. Trying to get things to fit in the truck was hilarious at first, but then it got frustrating because I felt like I had a lot of time left but couldn't get my score much higher.
Instead, I think what I'd do is have something else be the "difficult" part of the game, perhaps having a randomized list of things to pack (displayed as silhouettes) and having to rush into the house to find them, and making sure I don't pack the wrong things. When you launch them in the truck they just disappear (or shrink so more can fit).
That said, it's still a very good game. Nice work!