It would work better for smaller toys like Lego, compared to bigger toys like Duplo. The blocks spread out far off the mat, so it takes almost as much time to push the blocks onto the mat and then drop them into the box, than to put them into the box directly. It seems similar to just using a normal blanket and rolling it up and making an opening at the end to drop the toys into the toybox. The V shaped Velcro creates quite a large opening, I would’ve preferred a zip to be able to control the size of the opening. I haps this will become more relevant as the children grow older and use smaller blocks and toys.
Haven’t used it yet as it’s a gift but it looks great and your service was incredibly quick and easy.