I’d keep them too. I had flipo on boxrest and spent a shed load on equipment. He’d never been in before and I didn’t expect to have him back in after but I kept everything. I had so many folk beg me to sell stuff to them but I refused as just wasn’t ready to part with it after having to spend so much in the first place. Sure I’d get money for them but £40 per mat, I knew I’d have folk offering me silly money for something only used for six months! Now looks like I’m getting a bit of indoor space again for him and it’s so nice to think I don’t have to spend lots of money to kit it out, it’s all there.
If you can store it away, I’d choose that option, even if it’s away at someone elses place. Mine is in my parents greenhouse right now!