How about these for students who take one-off lessons? I've created a single monthly tuition envelope to record lesson dates and receipts! I think these can be used not only for single lessons but also for students taking limited-time lessons. *The monthly tuition envelopes are made from A4 thick paper. They are smaller than commercially available monthly tuition envelopes (approximately 18cm x 11.5cm when folded), but they can hold a 10,000 yen bill without folding. ① Honey ② Colorful Dots ③ Strawberry ④ Cherry ⑤ Bear ⑥ Ribbon ⑦ Stylish ⑧ Sweets ⑨ Car ⑩ Bus A set of 10 sheets in total. *You can purchase additional sheets for 70 yen each after purchasing one set. *You can also change the set contents if you leave a comment. *Kraft paper versions and white versions are also available. Since these are printed with a home inkjet printer, they are not waterproof. I make them carefully, but they are handmade by an amateur, so please understand that there may be slight differences in size, printing smudges, etc.