love this one for my y5 classroom. The children could generate the first set of words as a dictionary/ thesaurus exercise at the start of term. They could add to it over time using some blank cards too.
Boggle- This is by far the most popular in my room. I got this amazing activity from Create-Teach-Share and my kids go bananas for it. I just change the letters weekly to reflect our spelling pattern focus and they go on a word making frenzy. LOVE it!