What should i need to know about not using my mk1 cab...

Its not really getting much use during the week, apart from a 5 min drive to a local meet, and then possible weekend driving, but none of the above are guaranteed... odd trip to morrisons now and again too...
Doing a lot less miles so surely this can be good on my 143k engine? Is it worth starting her up and running her about once a week? Is there anything i need to do?
Just wondered...