Belated happy birthday! And congratulations on your first Jam!! The only thing I missed in your game was some sorta feedback to say I had collected a material...so ended up mashing the E key :D

Anyways, good job! :)

For a first non-prototype it is a great start. It feels a bit odd to gather an element without any clues, because I found myself multiple times asking if I already take something or not (for example a little sound based on the resource gathered)

You can also use some UI with transparency to display already taken pieces. Overall this is really original. By sure to flesh it out if you continues to work on it!

This was a good start for your first  jam! It might be nice to have a max number of items you can carry as well as moving the items around after each object is made or after you pick them up.