Personally, I often need some models for creating a WebVR Game or Demo. Until 03-04-2020 there's a great deal on Humble Bundle offering 14 packages of models to use in Unity, Unreal and other engines like A-Frame! The packages contain .fbx files, .obj files and textures besides the normal assets for Unity and Unreal.
Let me show you how easy it is to use these and create an A-Frame scene containing one of the models.
The Humble Bundle can be found at: https://www.humblebundle.com/software/best-of-polygon-game-dev?partner=sorskoot.
------------------------------------------------------------------
Twitch: https://twitch.tv/sorskoot
Twitter: https://twitter.com/sorskoot
Github: https://github.com/sorskoot
WebXR Discord: https://discord.gg/Jt5tfaM