Let it go instead
- Upholstered furniture with signs of pests or damp should go, not be re-covered.
- Plastic that has gone brittle will crack under load and is not worth storing anything heavy in.
- Cracked glass with a sharp edge is not worth the risk, however good it looks.
- Some items are worth more as parts than as a whole object, so take the parts and pass the rest on.
You do not owe an object a second life just because it is old. Repair, rehome, and upcycle where it makes sense. When it does not, dispose of it properly and move on.