Two options:
1) Laptop. When the SO and I want to watch in bed, my 15" laptop is plenty big if placed between us in the bed.
2) small projector. Yep, we just project on a wall or a sheet, and pipe the sound into the TC audio. The kids loved it. I put a few hooks into the ceiling and stretched a bungie cord between them. The projector is 2.2lbs, 2"x8"x6", so just strapped it in and loaded the DVD/netflix/etc on the lappie.
The projector comes in handy for external film nights, and folks can listen via headphones if desired. Awesome on dark nights in BLM spaces without any lights or neighbors. The projector is 1500 lumen, so nicely bright.
Jim