i know the mustache theme is everywhere right now (even at weddings) but i just love this idea for a party thrown for a guy-birthday? father's day?
cupcake toppers-so easy
send invitations out early, saying there will be a prize for the best mustache (real or fake). encourage your husband to go for the fake ;)
gift bags. of course.
they had a mustache candy mold on ebay yesterday for $3.oo. you could have a small table set up with bags for guests to fill up and take home. love the sign on the drink dispenser.