Melissa - stew the rhubarb down to a puree and add it to muffins, coffee cakes, ice cream (or sweeten it and use it over ice cream); it makes a great tirimisu filling; you can do rhubarb upside down cake....(we used to have an annual rhubarb dessert contest)
MIke - if your grapes are seedless - wash and destem; put on a single layer on a cookie sheet and freeze, bag when frozen solid. Nice snacky type item - still frozen.
grape juice, slightly sweetened and then thickened slightly can be used to make fruit dumplings (you cook the dumplings in the thickened juice which then becomes the sauce)
MMario - *REAL* men knit LACE