Small Betta Fish Tank, Aquarium... https://www.amazon.com/dp/B08YXG272B?ref=ppx_pop_mob_ap_share

This one is just under .5 gallons.

AMOSIJOY Small Fish Tank with LED... https://www.amazon.com/dp/B09C5PDXXF?ref=ppx_pop_mob_ap_share

This one is just under 1 gallon.

I have both and really like the LED lights on them

Small Betta Fish Tank, Aquarium... https://www.amazon.com/dp/B08YXG272B?ref=ppx_pop_mob_ap_share

This is the tank I got for mine. It's very small, too small for a Betta, but works good for sea monkeys. I measured 36 ounces of bottled water and used 3 packets of sea monkey water purifier and eggs. I also got a reptile heating mat with thermostat and a small 1 watt air pump and a digital thermometer. It's worked quite well for me and I like the LED lights on the top.

Small Betta Fish Tank, Aquarium... https://www.amazon.com/dp/B08YXG272B?ref=ppx_pop_mob_ap_share