I know spiders drop em but I haven't had much luck with getting them to drop. My adventure log says they drop from spiders in the snowy field but all I saw em drop was strong thread. So... Any help?

Pretty fair question, might have been asked a bunch and if so I apologize, but I’m wondering what other games there are that have the same feel as RF. Once I finish all of these games I know I’m going to want more and I want some recs to keep an eye out for when I’m out and about. Thanks in advance!