There are many ways to include punctuation tips and practice into your daily teaching practice. As students come in each day, make sure there is a sentence on the board or chart paper that needs editing. As they come in, they put the sentence into their daily edit books and use the correct punctuation. You can also create a package of punctuation worksheets whereby students complete 1 or 2 a week as you so request.
Another approach I like to use: When you're reading with the class, stop and ask why the author used a colon or a comma etc. This ensures that your students understand the purpose punctuation.