There are a lot of reminder services and sticky note services available on the Internet. Sticky Screen might be the simplest of them all. Sticky Screen lets you put three short notes on a sticky placed in the center of your screen. Make sticky screen your Internet browser’s homepage and your reminders stare you in the face every time you open a window or tab.

Applications for Education
Reminder services don’t get any simpler than Sticky Screen. If getting on the Internet is a daily occurrence in your classroom, consider making Sticky Screen your students’ homepage. Students can then quickly check their to-do list and update it accordingly.

Here are some other reminder and sticky services you might want to consider if Sticky Screen is too basic for your needs.
Postica
Stixy