A simple ceiling lamp.

Lamp OBJ

v 0.050000 0.500000 0.950000
v 0.050000 0.500000 0.050000
v 0.950000 0.500000 0.050000
v 0.950000 0.500000 0.950000
v 0.283214 0.628968 0.716787
v 0.283214 0.628968 0.283214
v 0.716787 0.628968 0.283214
v 0.716787 0.628968 0.716787
v 0.479089 0.636569 0.520911
v 0.479089 0.636569 0.479089
v 0.520911 0.636569 0.479089
v 0.520911 0.636569 0.520911
v 0.479089 1.001621 0.520911
v 0.479089 1.001621 0.479089
v 0.520911 1.001621 0.479089
v 0.520911 1.001621 0.520911
v 0.120085 0.500000 0.879915
v 0.120085 0.500000 0.120085
v 0.879915 0.500000 0.120085
v 0.879915 0.500000 0.879915
v 0.191820 0.537594 0.808180
v 0.191820 0.537594 0.191820
v 0.808180 0.537594 0.191820
v 0.808180 0.537594 0.808180
v 0.477324 0.537594 0.522676
v 0.477324 0.537594 0.477324
v 0.522676 0.537594 0.477324
v 0.522676 0.537594 0.522676
v 0.477324 0.506569 0.522676
v 0.477324 0.506569 0.477324
v 0.522676 0.506569 0.477324
v 0.522676 0.506569 0.522676
v 0.441414 0.487840 0.558586
v 0.441414 0.487840 0.441414
v 0.558586 0.487840 0.441414
v 0.558586 0.487840 0.558586
v 0.441414 0.379310 0.558586
v 0.441414 0.379310 0.441414
v 0.558586 0.379310 0.441414
v 0.558586 0.379310 0.558586
v 0.468332 0.364801 0.531668
v 0.468332 0.364801 0.468332
v 0.531668 0.364801 0.468332
v 0.531668 0.364801 0.531668
vt 0.521372 0.635923
vt 0.344914 0.635923
vt 0.616287 0.535777
vt 0.344914 0.810952
vt 0.250000 0.535777
vt 0.521372 0.810952
vt 0.250000 0.899098
vt 0.616287 0.899098
vt 0.616286 0.169491
vt 0.587763 0.198014
vt 0.441654 0.715349
vt 0.633308 0.303204
vt 0.650329 0.303204
vt 0.633308 0.436918
vt 0.441654 0.732233
vt 0.424633 0.732233
vt 0.424633 0.715349
vt 0.616287 0.518756
vt 0.616287 0.501735
vt 0.633170 0.518756
vt 0.616287 0.303204
vt 0.616287 0.436918
vt 0.616287 0.169491
vt 0.633308 0.169491
vt 0.750000 0.535777
vt 0.587763 0.507254
vt 0.558568 0.227209
vt 0.250000 0.169491
vt 0.278524 0.198014
vt 0.278524 0.507254
vt 0.558568 0.478059
vt 0.442372 0.343405
vt 0.307719 0.227210
vt 0.307719 0.478059
vt 0.651766 0.228543
vt 0.633308 0.228543
vt 0.651766 0.217178
vt 0.423914 0.343405
vt 0.423914 0.361863
vt 0.442372 0.361863
vt 0.649359 0.569454
vt 0.649359 0.551145
vt 0.663974 0.583079
vt 0.633170 0.500298
vt 0.644534 0.518756
vt 0.616287 0.484606
vt 0.634744 0.484606
vt 0.616287 0.495970
vt 0.644672 0.237059
vt 0.644672 0.255517
vt 0.633308 0.237059
vt 0.698017 0.436918
vt 0.650329 0.436918
vt 0.698017 0.397165
vt 0.630901 0.569454
vt 0.616287 0.583079
vt 0.630901 0.551145
vt 0.663974 0.535777
vt 0.663974 0.436918
vt 0.663974 0.484606
vt 0.653019 0.447873
vt 0.698017 0.303204
vt 0.650329 0.342958
vt 0.633308 0.255517
vt 0.673061 0.303204
vt 0.673061 0.169491
vt 0.673061 0.217178
vt 0.653019 0.473650
vt 0.627242 0.473650
vt 0.627242 0.447873
vt 0.633170 0.501735
vt 0.750000 0.518756
vt 0.633308 0.217178
vt 0.644534 0.500298
vt 0.634744 0.495970
vt 0.650329 0.397165
vt 0.698017 0.342958
vt 0.673061 0.255517
s off
f 5/1 6/2 1/3
f 6/2 7/4 2/5
f 7/4 8/6 3/7
f 8/6 5/1 4/8
f 4/9 1/3 20/10
f 5/1 8/6 9/11
f 9/12 12/13 13/14
f 8/6 7/4 12/15
f 7/4 6/2 11/16
f 6/2 5/1 10/17
f 16/18 15/19 13/20
f 12/21 11/12 16/22
f 11/23 10/24 15/21
f 10/3 9/18 14/25
f 20/10 17/26 24/27
f 3/28 4/9 19/29
f 2/5 3/28 18/30
f 1/3 2/5 17/26
f 24/27 21/31 28/32
f 19/29 20/10 23/33
f 18/30 19/29 22/34
f 17/26 18/30 21/31
f 28/35 25/36 32/37
f 23/33 24/27 27/38
f 22/34 23/33 26/39
f 21/31 22/34 25/40
f 32/41 29/42 36/43
f 27/20 28/44 31/45
f 26/46 27/47 30/48
f 25/49 26/50 29/51
f 36/52 33/53 40/54
f 31/55 32/41 35/56
f 30/57 31/55 34/3
f 29/42 30/57 33/58
f 40/59 37/60 44/61
f 35/13 36/62 39/63
f 34/12 35/64 38/65
f 33/66 34/67 37/24
f 41/68 42/69 44/61
f 39/22 40/59 43/70
f 38/46 39/22 42/69
f 37/60 38/46 41/68
f 6/2 2/5 1/3
f 7/4 3/7 2/5
f 8/6 4/8 3/7
f 5/1 1/3 4/8
f 1/3 17/26 20/10
f 8/6 12/15 9/11
f 12/13 16/53 13/14
f 7/4 11/16 12/15
f 6/2 10/17 11/16
f 5/1 9/11 10/17
f 15/19 14/71 13/20
f 11/12 15/14 16/22
f 10/24 14/12 15/21
f 9/18 13/72 14/25
f 17/26 21/31 24/27
f 4/9 20/10 19/29
f 3/28 19/29 18/30
f 2/5 18/30 17/26
f 21/31 25/40 28/32
f 20/10 24/27 23/33
f 19/29 23/33 22/34
f 18/30 22/34 21/31
f 25/36 29/73 32/37
f 24/27 28/32 27/38
f 23/33 27/38 26/39
f 22/34 26/39 25/40
f 29/42 33/58 36/43
f 28/44 32/74 31/45
f 27/47 31/75 30/48
f 26/50 30/64 29/51
f 33/53 37/76 40/54
f 32/41 36/43 35/56
f 31/55 35/56 34/3
f 30/57 34/3 33/58
f 37/60 41/68 44/61
f 36/62 40/77 39/63
f 35/64 39/78 38/65
f 34/67 38/73 37/24
f 42/69 43/70 44/61
f 40/59 44/61 43/70
f 39/22 43/70 42/69
f 38/46 42/69 41/68

This is public domain btw, so feel free to do whatever you want with it!