Bench power supply for classroom, 1 shared or many cheap?

[rina_stem]

STEM lab budget. Two ways to power 10 student benches:

• One good bench supply (Korad KA3005P, ~PHP 6000), students share/queue
• Ten USB-based buck modules + phone chargers (~PHP 300 each), one per bench

Students mostly need 3.3V/5V for Arduino projects, occasional 12V for motors.

Sharing = bottleneck during class. Ten cheap = no current limiting, students can fry parts.

Teachers: how do you power multiple benches safely on a budget? Adjustable-with-current-limit matters for teaching (short circuit = learning moment, not fried board).