At the end of every year, the Grassroots staff rounds up our favourite campaign or creative. It’s tough to choose between all the colourful posters that roll through our warehouse, but here are our “best of” 2017… Foo Fighters “Concrete & Gold” mural: It looks great, it’s in a fantastic location, and it’s a new and exciting service for us. – Jeffery, National Account Executive, Arts & Culture TOPMAN Mini Monsters in New York & LA: It looked great on the street – the colours really popped, and people like looking at people. – Mike, General Sales Manager Wealthsimple Mini…