If you haven’t already done so, send out Christmas cards to those people that are important to you. Say thanks, but only do it if you’re genuine about it.
Take the time to write each one personally – don’t just say “All the best Billy!”. Go down to the shops, buy some Christmas cards, hand write each one and get it to your intended recipient.
Some might call it networking as it does extend the 10 Traits To Becoming A Master Networker but I like to call it being human.