Quite a few.
Pongs/Standalones:
1. Odyssey
2. Odyssey 100
3. Odyssey 200
4. Odyssey 300 x2
5. Odyssey 400
6. Odyssey 500
7. Pong (Sears Telegames)
8. Pinball Breakaway
9. Super Pong Pro Am Ten
10. Hanimex TV Game Model 777
11. Sears Hockey Tennis III (dead)
12. APF TV Fun
13. Radio Shack TV Scoreboard
14. Venture Electronics Video Sports VS-1
15. DMS Tele-Action Mini
16. Coleco Telstar
17. Coleco Telstar Alpha
18. Coleco Combat
19. Wonder Wizard (dead?)
Consoles/Handhelds:
20. Fairchild Video Entertainment System (dead)
21. Fairchild Channel F System II
22. Sears Video Arcade (Heavy Sixer)
23. Atari Video Computer System (6-switch) x2
24. Atari Video Computer System (4-switch) x3
25. Sears Video Arcade (4-switch)
26. Sears Video Arcade II
27. Atari 2600 (Vader) x2 or 3
28. Atari 2600jr. (short rainbow) x2
29. Atari 2600jr. (large rainbow)
30. Edu Games 2600 (Argentinian 2600jr. clone)
31. Bally Astrocade (dead

)
32. Odyssey 2 x2
33. Intellivision (Mattel Electronics) x2
34. Intellivision (Sylvania)
35. Tandyvision One
36. Intellivision II
37. Intellivision System Changer
38. Atari 5200 (4-port) x2
39. Atari 5200 (2-port)
40. Atari 5200 VCS Adapter
41. Colecovision x2
42. Expansion Module #1 x2
43. DINA
44. Vectrex
45. NES (toaster) x2
46. NES (toploader)
47. Generation NEX
48. Atari 7800
49. Master System
50. Genesis
51. Genesis (model 2)
52. Genesis 3
53. JVC X'Eye
54. Sega CD (pop-top)
55. 32X [needs the hookup cords]
56. SNES x2
57. 3DO FZ-1
58. Saturn
59. Playstation
60. PSOne
61. N64 x4 (2 black, 1 orange, 1 green)
62. Dreamcast x2
63. Playstation 2
64. Wii
65. Game Boy x2
66. Super Game Boy
67. Game Boy Color
68. Game Boy Advance
69. Game Gear x2 (both dead?)
Computers:
70. TRS-80 (Level II BASIC)
71. Tandy 2 (a custom-built TRS-80 Model II)
72. Atari 800
73. Atari 600XL
74. Atari 800XL
75. Apple //e x4
76. Apple //e Platinum
77. Laser 128 (faulty disk drive)
78. TRS-80 Color Computer
79. TRS-80 Color Computer 2
80. TRS-80 MC-10 x2
81. Intellivision ECS adapter
82. Aquarius x2
83. Sinclair ZX80
84. Sinclair ZX81
85. Timex/Sinclair 1000 x2
86. Compaq Portable
87. IBM 5150 (needs keyboard)
88. IBM RT 6150 (needs monitor)
89. TI99/4a x3
90. Commodore 64 x3
91. Macintosh SE (dead)
Arcade:
92. Tank
93. Anti-Aircraft
Plug & Play:
94. Atari Flashback 2 x2
95. Atari stick (Jakks)
96. Activision stick
97. Space Invaders stick (Radica)
98. Ms. Pac-Man stick
99. Frogger stick
100. Powerjoy III (Famiclone)
101. Generic 75-in-one Famiclone
My fiance collects vintage LCD/LED handhelds, too. We've probably got 40 or 50 of those, including Atari Touch Me, Coleco Frogger (tabletop), Entex Turtles ("cocktail" tabletop), Simon, and Coleco Quiz Wiz (#1).