Maybe I Can Help!

This morning Jack and I were outside pulling weeds, drawing pictures and watching lily eat bugs. Unfortunatly we overheard an arguement from one of our neighborhood friends. After the argueing had stopped, I thought to my self, ok I can see how she feels. I have one kid and sometimes its hard to take some time to sit and relax, and take a moment to your self without a child screaming or wanting you to hold him every second he is awake. When Justin returns home from work, he likes to sit and relax from a day of stupid co-workers or upset clients. Like us our "clients" or children aren't always happy with us, so we here about it for the next little while. Plus there is the cleaning and the dishes and the laundry that has to get done. I do get help from Justin, so that is a big plus.
Anyway, back to what I came up with. Some of the ladies in the ward are stay at home moms like myself, and it can get annoying when you feel like you can't just sit and do nothing, or go to the store without twenty kids by your side. Jack and I are at home most of the day, and Jack could always use somemore playtime with other kids. I thought now would be a great time for us to try and help out our ward family if we could. (And the light bulb turns on) What if I was able to take some of their kids for a few hours on days when they need some relaxation.
Now here's where you come in. I haven't quite thought of how to let the moms know that I will take there thier kids for a few hours when they need time to themselves. Because yes, all of you have done it. Someone tells you that they can help you in one way or another, but you never really thought to do so, or really didn't take them seriously. I am serious! What do you think I can say to make them actually believe that im serious?
Im not saying that I am starting my own day care center, but you know, chillin with two more kids that aren't mine for an hour or two.

Some feedback is appreciated. Good or Bad works, then I will know what you think about my idea.