Is your mom still nursing the CRT she used to watch the Berlin Wall come down? It's time to upgrade, and TCL's least-expensive Roku TVs range from 32 to 49 inches and offer a super-simple built-in streaming interface.
Another option for a lot less money is Roku's Express Plus. It offers legacy AV connections suitable for a CRT and will enable your mom to watch Netflix, Hulu and YouTube for the price of a Mother's Day meal.
What's that? Your mom doesn't own a 4K TV? Well, consider buying her one of these. The S405 is one of the least expensive 4K TVs available and comes in sizes from 43 to 65(!) inches. It also includes the regularly updated Roku TV system, so her apps won't become outdated any time soon.
If your mom has a bunch of stuff on iTunes, or she just wants something that looks and feels a lot like her iPhone, the new Apple TV is just the ticket. In addition to numerous TV apps, it also works with many of the games and other apps she might already own.
At this price, however, it might make more sense to spend a bit more for the 4K version.
Looking for the blend of Roku smarts, excellent image quality and an affordable price? The P series is as good as it gets, delivering all of that goodness to your mom. Too bad it only comes in one size: 55 inches.
If you're looking to really spoil your mom this Mother's Day, there is no better TV for the money than LG's range of OLED. With HDR playback and perfect black levels, her movie watching will be better than ever before.