Have you completed a tuff shed with stucco, drywall, etc. for a gym and office, and if so, can you share photos and your experience for inspiration and advice?

Has anyone tackled a Tuff Shed and completed the interior? Maybe with stucco, drywall, or other finishes? I’d be really interested in seeing some photos and hearing about your experience! I’m thinking about getting two of them for a gym and office, both of which would be pretty spacious. Any advice or inspiration you could share would be greatly appreciated!