Merrill gathering herbs for Anders’ Clinic now and again because she knows the wilds in this area better than any of the others and while she’s never had much of a talent for healing she can help in this small way.
Anders making Fenris poultices and potions to ease the pain of his markings on bad days and shut up, he’d do this for any patient, and it’s not really magic so just take it.
Fenris backing up Isabela in her search for the Relic, and then, later, throwing off any of Castillon’s men who cross his path - however he has to.
Varric, in addition to what he canonically does, maybe pulling what strings he can to see that guards don’t get caught in the crossfire of the nastier Carta stuff.
Sebastian and Anders, the designated teetotalers, striking a reluctant truce to make sure the others get home safely after a night of drinking
Isabela eavesdropping on guard and templar alike, passing warnings to Merrill and Anders when the templars seem particularly alert and persuading tax collectors away from Fenris’s Mansion, one way or another.
Aveline - not breaking the oaths of her office, she swore to uphold those one way or another, but making sure the guards know the faces of the rest, and that Anders and Merrill shouldn’t be reported to the templars and that Hawke is usually trying to help honest, and there’s no sense evicting Fenris without a complaint by the Estate’s owner, and Varric’s friends with everyone, don’t take this as evidence of anything worse and Isabela - she swore to no more duels, just give her a night in the drunk tank, okay?