Below is some of the online groups on social media that might be relevant for you to join as an expat family:
Groups for women;
Lunch group in West Houston - Meets once every months; https://www.facebook.com/groups/Katy.Houston.Toeserne/?fref=ts
Group of Danish women in the US; https://www.facebook.com/groups/21180228399/?fref=ts
DAGBO has two relevant groups:
Danes in Houston; https://www.facebook.com/groups/25855457084/?fref=ts
Danes in Texas; https://www.facebook.com/groups/19100737594/?fref=ts
Below webpages might also be relevant for you as an expat family:
Coaching for spouses; http://www.louisefly.com/
Danish for your kids while you are abroad: http://www.danes.dk/danskundervisning/fjernundervisning/hvordan-foregaar-det/
Great book about living abroad; http://verdenkalder.dk/
Buy or sell used stuff when coming or leaving Houston:
https://www.facebook.com/groups/577094359020524/?fref=ts
https://www.facebook.com/groups/houstonswapshop/?fref=nf
http://houston.craigslist.org/
You can follow DACCSW on both Facebook and Linkedin: