I used the 4L box shown here in video last year and will do something similar this year but using the narrow 5L. Printables can be download on my shop threadmama.com and printed on your home printer, loval office supply store, or shipping store such as UPS. I printed mine on heavy cardstock. 100 lb. Let me know if any questions ❤️ -Stacey LTKKids LTKSeasonal LTKFamily