Biz

Soak stained clothes in Biz and water, then wash as directed per each item.  Use bleach on a toothbrush for removing stains on white fabrics.

Carbona Stain Remover

 Carbona Stain Wizard is the toughest pre-wash stain remover available. The all natural bio-enzyme formula penetrates, breaks up and removes stains quickly and effectively from most fabrics. Now you can remove most grease, protein-based and strongly colored stains caused by fat, oil, blood, milk, fruit, ketchup, vegetables and many baby foods.

Carbona Stain Wizard may even remove stubborn, older stains from fabrics.

Safe for all washables, colorfast textiles EXCEPT SILK

Goop

Apply liberally to the item (no need for water), wait some time, then put in regular wash cycle.  According to some other sites, Goop has been found to remove stains from clothes that were previously washed and dried.

Mother's Miracle

A cleaning solution for removing spit-up, urine, blood, etc.

Hot Water

Great for food coloring stains, such as kool-aid and gelatin stains.  Soak or repeat if necessary.

Oxy Clean Powder

Mix some powder and water to make a paste.  Rub the paste on the stain and wash.  Follow the directions on the package as some fabrics should not be cleaned with Oxy Clean (i.e. dry clean only).  Stain removers with enzymes, like Oxy Clean, are highly effective on stains.

Bleach / Bleach Pen

Can also scrub the bleach into the fabric with a toothbrush.

Tilex or other similar cleaners with bleach

Removes mildew stains on white fabrics.  These products contain bleach, so they may not be appropriate for use on colored fabrics.  Spray on and let sit.  Rinse any blue spots that form.

Spray Preparation Solution (found at shoe stores)

Use on white oxford-type shoes for scuffs and marks.  For scratches that have taken off the original color, use shoe spray.  Follow instructions for both products.  Don't forget to soak clean the laces too.

Oops

Useful for getting all kinds of stickers, stains, and marks (scratches, scuffs, crayon, pen, pencil) off plastic toys.  Make sure to test a small area before cleaning on any toy that is made of thinner plastic.  Use steel wool with the product on tougher stains.  The product will also take crayon off chalk boards without damaging the finish.  Make sure to wear rubber gloves when working with this product.

Magic Eraser

This works wonders at getting off crayon, pencil, dirty handprints, and other tough-to-remove stains.

Replacement Decals / Cotton Swabs and Alcohol

For Power Wheels.  You can find replacement decals at local repair stores.  Clean fuses and switches with a cotton swabs and alcohol.