Instructions
Head to the left and take the microwave on the table.
Go right, into the dining room, and grab the TV antenna off the table.
Head left and go up the stairs, take a right and use "Levitate" to remove a cage that is blocking your path. Zap the chair and take the doll.
Go downstairs, turn right and go out the door. Go to the right when you're outside and take the candlestick.
Head right to Molly Weasley and use "Levitate" on the platform you're standing on, and then hop onto the roof. Take the rubber duck that is up there.
Go to the left and jump onto a window sill. Use the "Levitate" spell to cause it to rise. Repair a ladder to your right and then climb up it. Go left again and place the TV antenna in its proper place.
Get off the roof and go to Molly Weasley, and give her the doll.
Return to the house and go back to the dining room. Put the microwave and candlestick in their proper places.
Go upstairs and put the rubber duck in the bathroom.
Return to Arthur and tell him you have completed the task.