My oldest son just recently watched the Doctor Who reboot and was most enamoured with recreating Christopher Eccleston’s ninth Doctor Who.
Part of successful cosplay is choosing characters who look like you and then making yourself look them as much as possible. In this case, my son needed to add a receding hairline to gain Eccleston’s distinctive facial look.
We found the t-shirt and leather jacket in the ladies section of the Goodwill. He’s too big for the children’s department, but not big enough to wear most of the men’s clothing. He found the sonic screwdriver for an excellent price at the little comic shop just down the street from us.