I thought of another idea for you. Have a yard sale. Get all your family and friends to donate stuff to sell and all the proceeds can go toward your daughters bills. Plus you can set out a sign and container for people who just want to donate. At the garage sell you can even do a bake sale and a drink stand.
You may try calling companies directly for food donations. For example calling the Johnsville company to see if they would donate the sausages. Giving company a promise that you will put out a sign for their company stating that such and such was donated by them sometimes helps a bunch. Plus the signs are easy to make all you need is poster board and a marker.
If you are doing a car wash too you may contact a local girl scout chapter to see if they would be willing to donate their time to wash cars. Most chapters will donate time becaue it helps the girls earn their badges.
You could also try a doggie wash. All you have to have is plastic pools, soap and water.
You could also contact local flower nurseries and see if they would donate Violet plants. You could do a "Violets for Violet" campaign. Selling the violets to consumers that stop at your fundraiser.
Hope your fundraiser is a gigantic success!!