Stud extractor set and tapping set. Many of the tongue in cheek items above, that you will actually need. Silicon spray. I've recently come across this and is a brilliant lube that drys
HGV grade easing oil - proper stuff , failing that lots of wd40 or plusgas . first aid kit , goggles , good thick gloves - MONEY !
The joggler a good tool if your fitting your panels,lots of 1mm cutting discs, safety glasses and eye wash oh and rizla papers are good to get rust out your eyes because it will happen! Ha. Not sure what panels your changing but you could panel bond on some none structural external panels? If done properly its better than spot welding as its a constant seam! Heat from the welder can distort the panels so you ll end up with loads of filler work so don't rush anything and take your time! The other tools you ll need is never ending I've spent over 10k on tools and I still want more
Now this worries me. I went round to my Dads at the weekend to find him messing with the brakes on his camper, he had a load of masking tape round his hand and a large plaster underneath it - turns out he whacked his had with a lump hammer and ripped open his skin, Mum had put a plaster on it but as it wouldn't stay put he'd wrapped his hand in masking tape. I'm hoping that with my delicate lady hands I try and protect them a little better!!
If you can get your hands on a bit then a foot long section of railway track will be a great asset for many things
Id be happy if i could get a foot of it to use never mind enough to weigh in A cobblers anvil is also on my list of things to find