I run a three phase converter. You can run more then one item on the digital ones, or at least the digital one i have. I can run my table saw which is 3 horse power along side with my dust extractor which is 1.5 horse power with no problem at all. It did however cost me £800 for the converter and another £600 for wiring 6-3 phase plug ins with isolators, four double gang plug-ins, four strip lights, and the mains with a panel.
It is easier to find 3 phase equipment then single phase, and they are cheaper. If i were to do it over again i'd get one that has a remote though as i have to walk from one end of the shop to the other to turn it on. It doesn't seem like a big deal until you are doing it all the time.