Canon's LiDE scanners are all small, light, and easy to set up and use. Even better, despite all being flatbeds (so far), their small size lets you treat them as portable, at least to the extent that you can take them with you fairly easily when you need to.
Reasonably capable for photographic prints; Backlight correction and color restore features in driver
Film scan doesn't work for slides; Scans only one frame of film at a time; Film scanning is extremely cumbersome