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 ...
The Canon CanoScan 4200F ($99.99 direct) is the sort of scanner that doesn't distinguish itself from the crowd. If all you want is an inexpensive device that gets photos into a PC, it's fine. But if ...