I know I'm not the only one who has this problem. I've talked to friends who have this problem.
It starts with a darling child wanting to make his/her own classroom valentines. But then said child makes one or two and gets bored. Then he/she must either a) go to school with two valentines for a class of twenty-five or, b) Mom (or Dad) finishes the job, which is slightly painful because the child's design is not something Mom (or Dad) would have ever chosen in a million years in the first place.
Here's how I solved that problem last year.
First, I let the Kid make valentines. Basically he wanted to dot paint and stamp on strips of paper--fine, cool, whatevs. After two, he was (predictably) bored, so--after attaching a cute Instax picture of him to the top--I took a few photos of the two completed valentines.
With me so far?
Then, I cropped the pictures down to wallet ratio (a 5x7 ratio), and printed them in wallet sheets. (Seventy-nine cents for a sheet of four through Mpix, plus shipping.)
Voila! Ta-da! Cutie-pie valentine's for the whole class that were easy as could be!