The same two collections that contain most of my stock video effects also include most of the general-purpose tiling [seamless] texture maps for use on 3d models.  These include well over a thousand texture files in the 'Triumphant Artists 2018' collection and an added 201 in the Autumn Bonus Collection. These collections are available individually through Itch.IO or combined on eBay on a DVD.
The banner links at the bottom of each page include links to my own webpages, links to my storefronts/shops online, and occasional links to other [third-party] verifiably legitimate stores and services I've hand-picked, vetted, and used myself. 
That said, I'll openly disclose that when you buy something from another vendor using these links, for example, a link to Amazon.com, I will get a small fraction of the sale amount and will use that as a means of supporting and expanding the projects I'm working on here. These ads for other vendors, as well as - especially! - links to my own shops, are helping me keep these sites online and growing with new content on a more frequent basis.