If you gather a mat, put it in the company chest slot 2, and I'll update this list as we go.

More mats

elm lumber 18
mahogany lumber 39
spruce lumber 24
iron ingot 96
steel ingot 111
steel hinge 36
steel rivit 12
electrum ingot 75
rose gold ingot 24
cotton canvas 12
linen yarn 21
linen canvas 18
toad leather 12
cut stone 132
clear glass lens 51

ash lumber 165
elm lumber 330
yew lumber 330
walnut lumber 405
oak lumber 165
iron nails 330
steel nails 330
cobalt nails 240
cobalt joint plate 330
horn glue 150
mortor 165
varnish 165
granite 165
marble 165
cut stone 330
firebricks 165
felt linging 165
linen canvas 75
rosewood log 165
clinker bricks 165
mudstone 165
spruce log 165
clear glass lens 45