Re-drew/re-rendered or just tweaked them to use alpha where appropriate,
since the inventory can use it reliably these days.
Other changes include better image for table legs, reduced the power
crystal image since it doesn't need to be so big now, and reduced the
height/diameter of the motor a little.
now leaves become oil extract, which is cooked into paraffin
this is then cooked into plastic sheets.
needed for future recipes that will need some kind of wax.