ePilot: Road to grammar junior
This website has been designed for young learners and offers 350 grammar quizzes, extra practice of word- and verb forms, etc.
ePilot: Quizlet – A Learning Community (part 2)
You can create simple wordlists with English/German translations, but also English words with English definitions and include pictures. If you have wordlists in MS Excel you can import csv-files with all the words without extra typing.