Here you can find the free five sampler spherical HDRIs to download for use in your personal or commercial projects completely royalty free. The free sampler includes unique possibilities like a skateboard shop, to have fun with. For those getting serious about using HDRIs (for 3D work or otherwise), there is volume one of 20 for $20 (USD). It includes images such as a lighthouse, and resto/bar interior for only a buck each! I can't wait to see how people use these images. The plan is texture, and sound FX packs in the future.