How do you make your dwellers happier?

Related questions

1. Does Mr Handy heal himself?
2. What is the fastest way to get caps in fallout shelter?
3. What is the max level in fallout shelter?
4. What does Nuka Cola bottler do?
5. How do you heal a Mr handy in fallout shelter?
6. What is survival mode in fallout shelter?
7. Do Mr Handys repair themselves?
8. What does the vault door do in fallout shelter?
9. Does Mr Handy collect training?
10. How do you level up vault dwellers?

Tags

1. #dweller
2. #quarters
3. #before
4. #living
5. #happier
6. #reallocate
7. #their
8. #another
9. #happens
10. #opposite
11. #dancing
12. #should
13. #happiness
14. #magic
15. #increase
16. #start
17. #until
18. #dramatically