Magic notepaper is a reward from Treasure Hunter and clover necklaces, and can be purchased with 500 thaler for 100 magic notepapers. When an item from inventory is used on magic notepaper, it will instantly convert that item (and any identical items) into notes, thus allowing the items to stack. Doing so will consume 1 magic notepaper per item in the process.
Skilling backpack, RuneScape Wiki
Notes (A-L) - The RuneScape Wiki
Mage of Zamorak, RuneScape Wiki
Killing General Graardor - The RuneScape Wiki
Fading memory, RuneScape Wiki
How do I make money? lol : r/runescape
RuneScape live
General Graardor/Strategies, RuneScape Wiki
Portal notes - The RuneScape Wiki
Magic Notepaper this! Double XP LIVE! Patch Week! - Feb 14 2022
Pulse core, RuneScape Wiki
Motherlode Maw, RuneScape Wiki
Could it be possible to use magic notepaper to items on the ground