OP, if you are actually going to get a crockpot (and I agree with everyone here -- they are great and completely safe to leave on at home) you should know that there are packaged frozen crockpot meals. Of course you need to read the labels on them but a few I've found taste good and are not full of junk.
Or you can find a recipe you like, make it ahead, and put it in a ziplock bag in the freezer.
I use a crockpot for a while but then run out of steam -- I never seem to have enough time to put it all together in the morning. If you have a ziplock bag of all the crockpot ingredients in the freezer, you just need to remember to take it out the night before and let it thaw in the fridge. I actually let it thaw in the crock pot container in the fridge -- then just move the container to the crock pot holder in the morning -- ANYTHING to reduce the amount of thinking I have to do in the morning.
Here's an example of someone who did that Once A Month Cooking thing to get about a month's worth of crock pot meals made and in her freezer (has recipes, instructions, shopping lists etc)
http://melissafallistestkitchen.blogspot.com/2012/02/freezer-cooking-2.html?showComment=1346699136218#c3456854906029638060