I would consider the Casio CT-S500. I have no experience with it but I’ve owned a CT-S1 as my “couch keyboard” for quite a while now. I find the key bed quite playable and the sounds to be pretty good quality; I would consider them giggable in the situation you are talking about. The CT-S500 adds a lot to that make it a candidate for you: pitch wheel, lots more tones, setups with splits/layers, some effects configuration, control pedal input, 1/4“ L/R outputs,etc.