New Project ideas are available here. You may goofle any one of them

Digital Logic Design Project Ideas

Vending Machine

Traffic Light

Key pad based Lock . Password based door security

Tic Tac Toe game

Voting Machine

Digital Game Show Timer

Game Show Circuit

Digital Clock

10 Second timer /Buzzer

Frequency Synthesizer

Music Machine using 555 timer

Digital Analog Convertor \

Random Number Generator \

BCD Divider

BCD Multiplier

Bar Graph Read out

Attendance system

Lift Control

Electrical Score Card

DICE Counter

Robot Controller

Alarm Clock

Speedo Meter

Calculator

Scroll Text

Stop Watch

ALU

Alarm System
http://www.zen22142.zen.co.uk/Circuits/Alarm/6zalm.htm

Electronic Scoring Game

http://www.electronic-circuits-diagrams.com/electronic-scoring-game-circuit/

Color Sensor

http://www.electronic-circuits-diagrams.com/color-sensor-circuit/

Jaming Circuit Game

http://www.electronic-circuits-diagrams.com/jam-just-a-minute-circuit/