Buy OSRS Items stuff - You can purchase materials (planks, nails, gold leaves etc.) for your guild with the coins. But just from NPC shops. Guild Coins are untradable so that you can not trade them to any participant and you can't purchase the stuff. These substances with ( c ) following their name are untradable and can only be used in your guild. So you can not rely on them in your normal POH. You can get Gnome Glueworms by studying the hunting procedure from the gnome King Narnode for 1,000gp. You need level 35 Hunting to catch them and you're able to catch them at the Tree Gnome Stronghold swamp with no tools. If you do not have the mandatory Crafting level then bring the materials to rsorder Master Crafter in the crafting guild.