16 Segment Black
This free online timer is a simple, but techie, 7 minutes timer features a black 16 segment LCD on a simple white background.
Great for helping students stay focused while they're working indendently or really any time that you need some help with focus.
Bright Painted Background
Bright, bold paint strokes across the back of this timer
Back to School
Light monospace font on a graph paper background
Roboto White on Black
A simple, basic timer with a heavy black font on a white background
9 Pin Red
Dark red dot matrix font on a black background
Art Classroom Timer
Art class themed countdown timer
9 Pin Blue
Blue dot matrix font on a solid black background