If you're looking for a replacement for Items.Design, Kive is a good candidate. It's a more complete creative workflow tool with AI-created visual assets, an indexed asset library and collaboration tools. Kive is geared for freelancers, agencies and brands, with features like AI-labeled items, GIF uploads and video support. It's available through free and paid subscriptions, so it should be adaptable to your needs.
Another contender is Icons8, which has a broad library of design assets including icons, illustrations and 3D models. Its premium library offers custom illustrations and animated designs. Icons8 also has a range of AI tools, like a Smart Upscaler and Background Remover, that can help you get more out of your creative work. It's geared for developers who need to integrate it with other software, like Figma and Adobe.
If you want to generate high-quality images and edit them, Leonardo is a powerful AI-powered tool. It can generate images, create 3D textures and use an AI Canvas to refine designs. Tasks include graphic design, product photography and concept art. Leonardo is available with a free tier and paid subscriptions, so it's good for both hobbyists and professional teams.
Last, Kittl is a design tool with AI tools to generate a variety of design elements. It includes tools like real-time text transformation and Magic Recoloring, along with a large library of illustrations, fonts and photos. Kittl is available as a web app and offers a free trial so you can try it out and get a feel for how it can help you create professional designs quickly.