Hendrick’s is a fine sipping gin. I know many people would rather drink battery acid, but I rather like gin on the rocks. Otherwise, G&T, Tom Collins, or other 2* ingredient drink. Not lots of room for ice cubes though.
A gimlet’s always nice, although I tend to think of that as a summer drink. Four parts gin to one part sweetened lime juice (Rose’s being the typical one. Now, some say get that shit away from their drink, but I like a little Rose’s in my gimlets, along with fresh lime juice and simple syrup. For some reason, I always associate the taste of a gimlet with Rose’s, so it tastes weird to me if it’s completely without it.)