Strawberry jam has no fat in it.
You should get a list of acceptable foods with the Alli system, but you could also go to their web site and look around there, I'm sure.
Obvious no fat foods would be fruits and vegetables.
If you don't have to avoid carbs, I would look for low fat snack crackers just for those moments when you need a pick me up.
Low fat granola products. I love low fat granola cereal...I think it's made by Post or Quaker Oats (green and white box), but don't have a box of it right now to tell you.

Low fat yogurt. This can also be used as a dip for fruits, and some people I know mix it with low fat cream cheese (which is another one of course) for a spread for bagels, toast, and things like that.
Sliced turkey (lunch meat). Actually, almost all lunch meats have a low fat version...just check the packages to make sure. Turkey is usually naturally lower in fat, but some of the processing can add it...if you get kinds that have certain flavorings (such as honey smoked, etc).