Doug, I bought 4 accessories for my CT22 vac, three of which I would buy again, one of which I would not.
Those that I would buy again are:
The universal cleaning set (454 769). This comes with a 36 mm hose that is not anti static. Of course, I also have the 27 mm antistatic hose that comes with the vacuum. I use the 36mm hose a lot, the main jobs being (1) with my Festool router and (2) when using the vac as a shop vac. The hose works well in both cases and I don’t seem to be bothered by the fact that it is not anti-static.The one that I would not buy again is the dirt trap (452 925). I have hardly ever had a use for it.
The long-life filter bag (456 737). I use my vacuum enough that I can justify this over the cost of replaceable bags.
The suction hose holder (487 072).