Ill further test and update this post.
But you can dupe items you held by spamming the drop button while picking up something like palm leaves.
#Duplication glitch possible fairly easily
wide cape
being fast enough results in you keeping the tool and dropping more.
wanton vigil
bro they're not ready for u chill
wide cape
the bug persists.
Once you have it "active" you can "drop" the tool/ weapon you have in your hand without losing it
thick mauve
A work around could be not allowing drop tools while you are taking resources from the floor