I found that Gerber graduates has a lot of "self-feeding" snacks that both of my kids loved. Ravioli, snacks, crackers, etc. Very totable. Give it a try.
In addition, since you are the only parent when your husband is away, you may want to try The Babysitter Tree to get some "adult" time. You can give a "wish list" of qualifications, get Caregiver referrals in your area, review their information in the comfort of your own home and interview anyone of interest. You can then verify their background, references and qualifications so that you can find some peace of mind. Just call ###-###-#### for more info!
Good luck and happy parenting!