HI CHIEN!! i currently have a huion,, with a screen, ,, JASDJ and it's honestly really nice !! and a lot cheaper than an ipad, i think it is a good option, i got mine from huion official store on aliexpress and everything went perfect o,o !!! u have to connect it to a pc or cellphone tho !!

Omggg unfortunately this cannot be possible bcoz I'm looking for something super super portable to use at work during my nightshift downtimes. Phones are in plastic bags due to the nature of my job 😭😭 cannot plug anything into it