Great game !
Respect the theme and introduce some nice challenges actually.
How many times did I felt leaving my jumping shoes behind me and I was like "Crap !"
Maybe allow a "reset object to their spawning point" would help people like me. Maybe.. :P
A good mechanics that can be introduced is the drafting. Merge 2 items into one than maybe allow to separate them later on to craft another thing ! Possibilities are endless !
This combine with good puzzles it can become a really good game !
Good submission :)