This%20treasure%20trove%20of%20boredom-busting%20ideas%20will%20keep%20children%20entertained%20for%20hours%20on%20end%2C%20whatever%20the%20weather.%20Stage%20a%20shadow%20puppet%20show%2C%20make%20musical%20instruments%2C%20fly%20a%20kite%20and%20lots%20more%2C%20then%20stimulate%20your%20brain%20with%20riddles%2C%20word%20games%20and%20memory%20puzzles.%20With%20specially%20selected%20links%20to%20websites%20with%20even%20more%20fun%20things%20to%20do.