Last of the 90's. A 2002 KZJ95 Prado (3.0 1KZTE Diesel) with 255,000kms.
I have replaced a few things which seem to go on these at around this sort of mileage. Namely front suspension components (rack mounts, rack ends, inner tie rod ends, lower ball joints, sway bar bushes). Starter motor has been rebuilt (243k) with new internals (Denso) and I have just replaced the fuel filler hoses, fan belts and cleaned out the intake manifold and butterfly valve (all genuine Toyota parts). Also just replaced glow plugs (Bosch).
One word of advice is to only use Genuine parts where possible (I buy from Amayama). I replaced the lower ball joints at approximately 235,000km with one eBay special and another rebranded 555 from Roadsafe. After 15,000km the 555 unit is completely knackered and the other one on the way out. Genuine units coast around $300ish for the pair delivered, but should give another 250,000km or so of worry free motoring.
We pay big dollars for the reliability that Toyota offer. Why corrupt it with cheap Chinese crap only to save a few bucks in the short term. I've learnt this lesson in any case.