For the dad that likes to keep active and connected I will pick:
Samsung S10+ for productivity on the go whith Samsung DEX
Galaxy Tab A 10.5 For media comsumption (youtube,Netflix,Crave whatever dad is into)
Galaxy watch 4.6 For fitness tracking and at a glance notification verifications
For the teen or young adult in the household I will pick:
Xbox One X or PS4 Pro wiht VR bundle
Everyone else gets a pixel 4 and plenty of love and best wishes for the holiday season.