thanks for the bug report, i'll fix that right now
as for being stuck...yeah, that puzzle's honestly not the best, but you can combine the Rug Piece with something you definitely already have in your inventory :)
I tried combining the formless objects (well, formless object #1) with every other object, and tried using it on everything across all the rooms, all to no avail. Any other clue about what I need to do to make use of the objects, or what I should be expecting? Thank you!
One recommendation/request: since there's no save feature, I am doing repeated playthroughs, and the only really annoying point is the bones game. I know the way to always win, but it still takes a while to play through the multiple times. How about speeding it up? E.g., maybe make cut out one round (maybe start with 8 bones, for 3 rounds, and not 25 for 5 rounds? And/or round up from half of 3 to get 2 of the 3 bones, rather than 1 of the three and having another round)