Hi there Red Lion! Prior to my CT-22 I was using a 12gallon, 5hp Ridgid vac with a auto-start adapter. Compared to my CT-22 it doesn't hold a candle, but for what it was it worked reasonably well. This is the
auto-start adapter I used. It is essentially the same principal as a built-in starter like on the Fes and Fein vacs, you just plug your vac into the lower outlet and your tool into the upper outlet and turn your vac switch to the "on" position, and every time you turn your tool on the vac switches on.
For my miter saw, table saw and router table I used the supplied 2" Ridgid hose, and for my random orbit sander and other smaller tools I bought a 1 1/4" hose from the Despot. The arrangement works reasonably well, and I still use it for my tablesaw or other applications where the tool will be pretty stationary and be producing massive quantities of dust/shavings (jobsite tablesaw, router table). I disliked it when I used it with my random orbit sander sanding drywall dust, since the hose wasn't grounded I got some pretty wicked shocks.
So, anyways, if you want to (temporarily) bypass a CT, I'd say just get a run of the mill wet/dry vac, get yourself a auto-start adapter, and maybe a cheapy 1 1/4" hose. You can still upgrade hoses and buy the D36 hose for some applications, it should be compatible with most vacs and you'll need it for your CT eventually anyways ;D I hope this helps!