The relays could be very useful in many projects.
The large heavy transformer just above and two the left is gold for a hobbiest depending on ratings.
The on off switch seems to be a guarded switch and if still functioning would make a good on off switch for a grinder belt sander or such.
The fused disconnect is great peice I would normally run my power to the machine through and can be used with single or multi phase circuits.
Each time you have to buy one of those cord grips for a cable to exit an enclosure you will be kicking yourself.
You will have enough things to buy as your project progresses save some money save the earth reuse repurpose and rebuild equipment more affordable