JavaScript/jQuery:

Simple games & gadgets

jQuery/JavaScript friend finder
jQuery/JavaScript Calculator
jQuery/JavaScript Trivial Pursuit
jQuery/JavaScript Coder-vocab-guess

Ajax/Node:

Web apps that pull live data from an API

Ajax/Node New York Times Search

MySQL/Mongo:

JS website with database

MySQL/Mongo MyCelebrityApp

React:

interactive full-stack web apps w/ databases

React Chow$pot
React The Kennel
React Lamont's Book Search
React Muslim Pro (Check Blog)