Something cheap. Pretty much anything will work for those sort of jobs, and if it's going to be used that infrequently there's no point spending lots on it. If/when you find it's inadequate, then you buy something posh.
I got a cheapo cordless drill for about 15 quid in a B&Q sale, and while it works well for that sort of thing, infrequent use means that the battery is always flat when you need to use it, so I end up mostly using a mains drill or an ancient hand-cranked thing, depending on the delicateness of the task in hand.