The start of a fresh week is an occasion to consider your plans for the coming five days. Or if you're in AuditLand, likely six days given that busy season is ramping up and the joys of full two day weekends are fast becoming fleeting memories.
It doesn't help if your client has a proclivity for only sticking around for four days beford disappearing to work from home on Friday. Given that you may need those client contacts to be present and available, what can you do to encourage people to stick around?
Donuts.

Yummy treats are a surefire winner with all but the most health-obsessed auditees. But if the treat can be enjoyed by world class athletes convening in Vancouver in 2009, something tells me it'll work for you too.
Make it a recurring tradition and you may induce a quasi-Pavlovian association with your Friday treat that may even get them to like you.