A few points, I picked up from a talk by sheikh Abdulnasir Jangda.

1. Help your mum/wife/sister with making sahur.

2. Learn some Quran together, tafseer, translation, etc.

3. Pray together as a family.

4. Have a Quran memorization competition. Choose a surah , the first to memorize gets a gift from everyone.

Basically get a fun islamic activity for the family.

5. For young couples with small children, take turns in going for taraweeh.

The man should babysit sometimes