I second Phoenix, remove all dates of birth, education etc from the CV and emphasise reliability and experience.
Try agencies, they are often a good way to get a foot in the door. I actually like the flexibility of agency work, working a couple of months and having a couple of months off, but I've just been offered a permanent part time role at the company I am presently temping for and I'm considering taking it and I'm 64.
My top tip is search for "immediate start" on agency web sites. I've applied for roles on the Thursday and started the following Monday. I'm not saying the panic to get people in place to sort out a work place back log is the only reason they hired me, but I'm sure it helped!!
Of course a lot depends on how much you want to earn, there are plenty of jobs out there, but they mainly pay minimum wage and it's not easy, I know, to think about starting at the bottom of the pay scale at our age.
One final point, in my experience the older the interviewer the more likely I have been to be offered the role. Discrimination can work both ways.