Hi A.,
I am a mom of a 19 mo. old son and we as well live in Cypress. My husband has a computer business and builds and repairs computers among other things. We know of two places you could go that sell used laptops..
J-Tech Systems
30006 Hwy 249
###-###-####.....at J-Tech the owners name is Johnathan. He's a really good guy and will let you know if he has anything. This one is located going out 249 towards Tomball...it is one your right a little before Tomball College. (in a little strip center across from an ATV and Tractor place)
PC Parts and Service
17776 Tomball Prky
###-###-####....the owner here is Ron. He will also help you. This one is located right in front of Willobrook Mall in Willobrook Court. It is facing 249 and there is a Chuck E Cheese right by it.
Well good luck, I hope I was able to help you, let me know if you have any questions.
C.