Third - A plugin that lets you import, lit, and render 3D in Figma
Textures.com - Textures.com is a website that offers digital pictures of all sorts of materials.
Contentful to Figma - Enrich your Figma design with real data from Contentful
Poly Haven - Poly Haven (formerly known as Texture Haven) is an online website where you will find scanned textures without any cost and that are of high quality.
LottieFiles for Figma - Insert Lottie animations as GIFs and SVG's into your designs
Poliigon - A library of materials, and HDR's for artists including free textures that want photorealism.