This year for parent gifts we made handprint calendars. These came out super cute, but they were a lot of work to complete. If you wanted to do this with your students I highly suggest giving yourself more than 3 weeks. If I do this project again next year we will start in September as to allow for lots of time to fix mistakes, dry, and put it all together.
To wrap the calendars I took big white envelopes and let the kids decorate them with stickers, markers, etc. We then just slid in the calendar and sealed it shut.