The phrase "activities done" is correct and usable in written English.
It can be used to refer to tasks or actions that have been completed or performed.
Example: "The report includes a summary of all activities done during the project timeline."
Alternatives: "completed activities" or "performed tasks".
I probably look a little funny, but I get two activities done at once.
They were activities done for their own sake, and not because they led to money or glory.
Several developments described in this paper are a continuation of activities done in the framework of EFDA/F4E contracts.
Using bibliometric analysis, this paper discusses the research activities done in both North America, Asia and other continents.
Closely connected with verbal expressions of sacred power are activities done in worship, in sacraments, sacrifices, and festivals.
The American people, however, are demobilised and detached from the wars, interventions, operations, and other military activities done in their name.
These weird (but beautiful) girls appreciate shy, sad, creative boys and teach them to enjoy life again though sex, love and various activities done in the rain.
It's a question similar to those asked about other activities done by older people, like doing crossword puzzles or taking college classes.
Stubbs's historical paintings are among the least successful of his works; much more convincing are his scenes of familiar country activities done in the 1770s.
4. WRAP-UP/HOMEWORK: Considering the activities done in class, each student develops a female video game character for an action-adventure game that would serve as a positive role model for girls their age.
My class and I were reading this text as part of a series of activities done to deal with the stress of news about the Trump Administration's latest crackdown on immigration.
