It's finally done. About as well as I can do it. Just over 200 lines of code I think. I'm gonna go in and add notes now so it is easier to follow.
Edit: If you bums stayed up super late like, ever, you would have seen me accidentally post my last name. Oh well, ya (literally) snooze, ya lose.
[hider=Converter]

public class Converter {
	public double centTot;
	private double totFees;
	public Converter() {
	}
	double collectedFees = 0;
	public void addQuarters(int quarters)
	{
		centTot = centTot + 25*quarters;
	}
	public void addDimes(int dimes)
	{
		centTot = centTot + 10*dimes;
	}
	public void addNickels(int nickels)
	{
		centTot = centTot + 5*nickels;
	}
	public void addPennies(int pennies)
	{
		centTot = centTot + 1*pennies;
	}
	public double getCollectedFees()
	{
		double tranFee = .078 * centTot;
		return collectedFees = (tranFee + collectedFees) / 10;
	}
	public String getVoucher()
	   {
		double tranFee = .078 * centTot;
		double retVal = centTot - tranFee;
		int twentyBill = 0;
		int tenBill = 0;
		int fiveBill = 0;
		int oneBill = 0;
		int returnQuarters = 0;
		int returnDimes = 0;
		int returnNickels = 0;
		int returnPennies = 0;
		while(retVal >= 2000)
		{
			twentyBill++;
			retVal = retVal - 2000;
		}
		while(retVal >= 1000)
		{
			tenBill++;
			retVal = retVal - 1000;
		}
		while(retVal >= 500)
		{
			fiveBill++;
			retVal = retVal - 500;
		}
		while(retVal >= 100)
		{
			oneBill++;
			retVal = retVal - 100;
		}
		while(retVal >= 25)
		{
			returnQuarters++;
			retVal = retVal - 25;
		}
		while(retVal >= 10)
		{
			returnDimes++;
			retVal = retVal - 10;
		}
		while(retVal >= 05)
		{
			returnNickels++;
			retVal = retVal - 05;
		}
		while(retVal >= 01)
		{
			returnPennies++;
			retVal = retVal - 01;
		}
		String a = "";
		String b = "";
		String c = "";
		String d = "";
		String e = "";
		String f = "";
		String g = "";
		String h = "";
		if(twentyBill != 0)
		{
			a = twentyBill + " twenties, ";
		}
		if(tenBill != 0)
		{
			b = tenBill + " tens, ";
		}
		if(fiveBill != 0)
		{
			c = fiveBill + " fives, ";
		}
		if(oneBill != 0)
		{
			d = oneBill + " ones, ";
		}
		if(returnQuarters != 0)
		{
			e = returnQuarters + " quarters, ";
		}
		if(returnDimes != 0)
		{
			f = returnDimes + " dimes, ";
		}
		if(returnNickels != 0)
		{
			g = returnNickels + " nickels, ";
		}
		if(returnPennies != 0)
		{
			h = returnPennies + " pennies, ";
		}
		String voucher = "You have receieved " + a + b + c + d + e + f + g + h;
		centTot = 0;
		System.out.println(voucher);
		return voucher;
		}
	public double getCentTotal()
	{
		return centTot;
	}
	
}
[/hider]
[hider=Kiosk]
import java.util.Scanner;
public class Kiosk {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
	Scanner in = new Scanner(System.in);
	Converter dm = new Converter();
	System.out.println("Welcome, Guest! Thank you for using Jacob *********'s Cash-for-Change Service!");
	System.out.println();
	String userInput = "y";
	do
	{
		String input;
		System.out.println("Our transaction has begun. Please deposit the change you wish to exchange.");
		do
		{
			System.out.println(">");
			input = in.nextLine();
			input.toLowerCase();
			if(input.equals("done"))
			{
				break;
			}
			else
				{
				String[] parts = input.split(" ");
				if(parts.length !=2 || input.equals("done"))
				{
					System.err.println("Invalid Input. Please begin a new transaction.");
					userInput = "n";
					input = "done";
				}
				else
				{
					String part1 = parts[0];
					String part2 = parts[1];
					part2.toLowerCase();
					int coinAmount = Integer.parseInt(part1);
					if(part2.equals("quarter") || part2.equals("quarters"))
					{
						dm.addQuarters(coinAmount);
					}
					else if(part2.equals("dime") || part2.equals("dimes"))
					{
						dm.addDimes(coinAmount);
					}
					else if(part2.equals("nickel") || part2.equals("nickels"))
					{
						dm.addNickels(coinAmount);
					}
					else if(part2.equals("penny") || part2.equals("pennies"))
					{
						dm.addPennies(coinAmount);
					}
					else
					{
						System.err.println("Invalid input. Please try again.");
					}
					dm.getCollectedFees();
				}
				}
		}while(input != "done");
		dm.getVoucher();
		System.out.println("The current transaction has ended. Would you like to make another? Please enter 'y' or 'n'.");
		userInput = in.next();
		while(!userInput.equals("y") && !userInput.equals("n"))
		{
			System.err.println("Invalid input. Please try again.");
			userInput = in.next();
		}
		in.nextLine();
	}while(userInput.equals("y"));
	double moneyStolen = dm.getCollectedFees();
	System.out.printf("Thank you for throwing money our way! Instead of going to a bank to get the same service for free, you have given us $%.2f. We appreciate your business!", moneyStolen);
[/hider]