We get forms in email and have to transfer the data to forms online. Short of a full software scraper solution MMM is amazing and we use it to copy most of the standard fields into the form.
But it can't do everything. We still have individual fields that need to be copied and pasted.
So I have these two very simple MMMs for copy and paste. They allow you to scroll over a field, then use a hot key (I activate with a macro keyboard key) it clicks the mouse three times in the field to select it all and then it copies. Then we use another to paste. You just scroll the mouse over the destination field and click the second macro key. So to copy and paste there are zero mouse clicks and no Cntr+C or V. It may not seem like much but when you have to do copy and paste 500 times a day it's a huge benefit!