I had to get real creative with parts sourcing during that madness.
Toyota's online site proved pretty useful; the pricing is outrageous but at least I was still able to look up parts and generate estimates for my customers, with a disclaimer that everything was OEM and therefore more expensive.
I was going through a lot of dealerships, which was frustrating because most of them take their sweet time to get back to me (I mostly communicate with email rather than phone, so that I can make a request, move on to something else, and then come back to it when I get an answer; I also like having a written record of correspondence. It helps when looking up future jobs for the same unit.)
I was able to source quite a few parts through O'Reilly Auto (First Call Online for professional installers; I recommend it if you have a commercial account with them). They can't help you look up parts for forklifts, but if you have the OEM number, such as with filters, belts, bearings, etc., their cross reference index is pretty extensive, and their distribution system is very efficient - as long as you already have a number to work with.
ABI Industries in Oakland is a good source for bearings, seals and chains. I had used them before but they got a lot of my business while TVH was down.
Zuma Sales (based in WA) is a good source for scissor lifts, telehandlers, boom lifts, etc. JLG, Skyjack, Genie, Skytrak, etc.
Of course I was using FPE a lot too. They're pretty good about Toyota, but they also have a decent amount of Mitsu and Nissan parts, which is helpful with Cats, TCMs and Komatsu. Unfortunately, they don't have a parts lookup catalog, so you need to have part numbers.
That was the biggest problem for me, really. I could deal with not being able to order from TVH. It was losing the ability to easily look up parts and pricing that killed me; it was like working in handcuffs for three weeks.