make it a quilted wall hanging so it doesn't need to be washed later.
i would not worry about the sweaters, treat them like t=shirts...if a baby was wearing them they are washable...the only item you listed that i would be worried about is that felt stocking...it will not hold up to laundering. if you can leave the stocking out i do not think you will have anything to worry about. the one my daughter brought me a garbage bag of clothes for had sweaters and a couple sweat suits...somefleece items...all of it worked fine---i did it t=shirt quilt style...
no craft felt though...craft felt is not washable.