5- Involve your class in a voluntary project :
The end of the year can be a good time to get your students enjoy and experience community service. Have them run simple voluntary projects such as school clean-up activities, Tree trimming, Classroom decorating or painting. When they are done with their project, ask them to write a report in which you can express their impressions and reactions.
6- Class Album Book:
This is one of my favourite activities in which students are asked to create the yearly class scrapbook. First, have students collect their special pieces of writing, projects or anything which should be meaningful to them, and might reflect their remarkable memory. Then, have them stick them on blank papers, and make a class scrapbook.
7- Team Silly Games
Prepare a set of fun and silly games that require competition between teams. The activities should involve movement and teamwork . For example you can check this collection of team building activities. You can organize the games at the level of the class or the school if you meet any cooperation from other colleagues.