Four more textures for you—three of them are versions of the same design, and I couldn’t choose between them. First, a repeating pattern of double-spiral roundels:
And second, the same with a more complex graduated background:
And third, a low-relief white-on-white version which reminds me of the old-time TARDIS control room roundels.
And lastly, layer on layer of messy, tangled handwriting on a blue & green intermix.
As always, these are Creative Commons (CC:BY) licensed, free for personal & commercial use, so long as you attribute them to me in commercial uses, and if you find them useful (and have it to spare) please do chuck a few dollars a month my way via Patreon.