Ideas - A:
Audio Amplifer Relay Delay

Ideas - B:

Ideas - C:
Control Electric Devices from PC

Ideas - D:

Ideas - E:

Ideas - F:

Ideas - G:

Ideas - H:

Ideas - I:
Intercom System

Ideas - J:

Ideas - K:

Ideas - L:

Ideas - M:

Ideas - N:

Ideas - O:

Ideas - P:

Ideas - Q:

Ideas - R:

Ideas - S:
Simple Car Battery Charger
Simple FM Transmitter
Simple Stun Gun

Ideas - T:
Triac light bulb flasher
TV Remote Blocker

Ideas - U:

Ideas - V:
Volt Tracking Transmitter

Ideas - W:

Ideas - X:

Ideas - Y:

Ideas - Z: