If you want to build an immersive environment for your NFT art show, Holoframe is a good option. This web-based AR app lets you show and customize your NFTs in 3D AR scenes. You can mint a token to use the app, place your NFTs in frames, change their colors and textures, and record them to share online or in person. It supports NFTs on Ethereum and Polygon, with Solana support possible through a custom plan, and works on Android and iOS devices without having to download an app.
Another option is Animant, which provides an AI-powered AR foundation for building interactive 3D scenes. You can scan and capture objects and rooms, then animate them. It's a pretty flexible foundation, accommodating lots of devices and offering features like object capture, room capture and live collaboration. Animant offers free and Pro plans, so it should be within reach of most budgets and needs.