Sansevieria/snake plant won't die if you don't water it (well it will eventually), it'll just stop growing and wait for water. It's a good first step.

Might be better to get a handful of things, remember to water it all just once a week and it should work out ok.

Pothos and spider plants are both cheap and hard to kill

Depends on the work you want to put and how much you travel. Jade plants, aloe and other succulents take almost nothing. Water 'em like once a month. I'm a big fan of ferns, pretty low effort and they can grow to what ever size you let them.

Really most plants are pretty easy if you have them in the right soil and pots. Most only need watered weekly, if that, and will stay healthy with no maintenance.

Others have mentioned Sansevieria and pothos, I'd add spider plants (chlorophytum comosum) are very low maintenance and you can probably get a baby for free from somebody who has a mother plant. Also ZZ plants (zamioculcas zamifolia) because they don't require much light and can go longer without watering so their placement can be more flexible.

Adding lucky bamboo to the recommendations! It's very manageable and can be kept in soil or water.

monstera deliciosa or raphidophora tetrasperma