In the days when I had money, I had the Clarke two bag dust extractor, but never found it much use. The problems were different for me then. I was woodworking using a sawbench and I wanted to keep the workshop (garage) dust down.
Now I have a small CNC setup in my den and it is on a bench with shielding all round. I have posted a couple of pics in my "Hi Y'all" thread. Chasing the tool with a vac keeps dust down and pulls a lot of the swarf into it. After the job any further mess is confined to the bench. Bear in mind that what I do will be small scale and mainly acrylic, aluminium or circuitboard, with the occasional jig cut out of that mixture of wood dust and glue, MDF.
The fridge compressor is yet an idea I have to try out, and I want to experiment with cutter cooling and directing the swarf towards the back of my bench where it can be easily cleaned up.