When I was "getting back into the game" after not being intimate for a few years, I bought a simple but quality vibrator. For the first few times that I used it I simply lubed it up and inserted it, letting my vagina get used to it, leaving it in for a varied period of time. Once I was able to do that without feeling extremely stretched, I began to use it as normal, first without the vibrations and rotations, and then adding them slowly. What I would suggest is to ask your husband what his girth is, if you do not already know it, and find a dildo or a vibrator that is similar or slightly smaller and use that to ready yourself for his homecoming.