This is a fun little puzzler! The concept of staying powered up is simple but is used in such interesting ways. The fact that the wire acts as a physics object was such a fun surprise. The boxes themselves become an interesting challenge in later levels. This has a surprising amount of polish for a game jam game. I'd have liked to see a better indication of attaching/detaching from the cord and auto-detaching between levels (that was a bit confusing). But overall, great work.