1. Say ‘Good Morning’ with a big smile
2. Make them a cup of tea
3. Ask their advice
4. Lend them something
5. Ask them the time/directions/where they bought that nice thing
6. Share food with them
7. Ask them about their family
8. Buy them a drink
9. Talk about TV you both like
10. Tell them about something goofy you did
11. Ask them on what would they spend a lottery win
12. Gossip together
13. Comment positively on their décor/car/bicycle/taste in desktop stationery
14. Ask what they did/will do at the weekend
15. Choose to sit next to them
16. Ask if they can recommend a tradesperson/hairdresser/yogic guru
17. Tell them about a crush you have
18. Ask for help with a crossword clue
19. Invite them for coffee
20. Buy one, get one free, and give them the spare
21. Show them a funny cartoon
22. Ask their opinion on world events
23. Go shopping together
24. Catch their eye and smile
25. Encourage their creativity
26. Compliment their jewellery/hat/shoes/bag
27. Ask for their support
28. Tell them about something you love doing
29. Ask where they’re going on holiday
30. Do something naughty together
31. See their point of view
32. Ask them about their childhood/college years/first job
33. Discuss favourite writers with them
34. Ask what groups/clubs/organisations they belong to
35. Ask to borrow something (and give it back soon)
36. Let them talk
37. Tell them about your love life
38. Invite them to your birthday do
39. Ask what art/music/film they like
40. Share stories of injuries
41. Talk about travel
42. Talk about food
43. Create a running in-joke with them
44. Do karaoke together
45. Treat them well
46. Remember stuff they tell you
47. Tell them they smell nice
48. Have welcoming body language with them
49. Talk conspiratorially with them
50. Use their name
51. Buy them a cake
52. Doodle a cartoon of them and gift it to them
53. Think about their comfort, not yours
54. Ask if they collect anything
55. Go swimming together
56. Ask them to scratch a place you can’t reach
57. Take their turn at the washing up
58. Sing a song together
59. Touch their arm
60. Let them go first
61. Help them
62. Look pleased to see them
63. Enquire after their health then listen to the answer
64. Laugh together
65. Play a silly game together
66. .…or a clever game
67. Teach them a useful skill
68. Share an umbrella
69. Assume they are a good person
70. Empathise with them
71. Find something esoteric you have in common
72. Tell them a secret
73. Tell them when they have a cappuccino moustache
74. Show them your weird birthmark/tattoo/hairy mole
75. Swap childhood tales
76. Jog together
77. Give them a lift
78. Notice the colour of their eyes
79. Compliment them on an unusual quality or skill
80. Be genuine with them
81. Make them feel useful
82. Remember their tea, milk and sugar needs
83. Recommend a good show to them
84. Compare feet/hands/ears
85. Let them be nice to you
86. Bring them back a free or silly gift from your holiday (a shell, seaside rock, a beermat)
87. Offer them your warm jumper/hat/scarf
88. Compromise on something together
89. Write something personal on their birthday card
90. Thank them
91. Ask them if they need a hug
92. Confide in them
93. Look out of the window together
94. Ask them to join your team
95. Work together in companionable silence
96. Defend them publicly
97. Be compassionate to them
98. Gently tease them
99. Give them the best chair
100. Go somewhere beautiful together

Further tips on making friends: http://www.towerofpower.com.au/11-tips-from-benjamin-franklin-to-make-friends