Música as the input.
Music is the cheapest source of comprehensible input you will ever find. A three-minute Bad Bunny song delivers more authentic Spanish than a textbook chapter, and your students already know the melody. These lessons treat music as the input, not as the reward at the end of a unit when the worksheet is done.

Lunes con música (36 weeks of Monday openers) is the first one shipping in this category. Each Monday ships with a song, a five-minute interpretive task, and a discussion prompt. After that, full mini-units on specific artists (one on Rosalía and the flamenco-to-pop arc is fully outlined).
Every Spanish teacher hits the morning when the kid is throwing up at 5:30am and you have not even thought about what period 1 is going to do.
A good single lesson is not a worksheet.
A mini-unit is the right unit of work for most of the year.
AP Spanish is the test that pretends to be a course.