When it comes to easy pets, it's hard to beat cats. You can go away for a weekend and just leave out food and water for them. They're not messy - need they are fastidious and will look at you in dismay if you neglect to regularly clean their litter boxes.
Of course, they have their drawbacks. They shed. A lot of people are allergic to them. And if you don't provide alternate places to scratch, such as a cardboard or carpeted scratching post, they can literally shred furniture and floor coverings.
While they're definitely low maintenance, as you can see, they will need a few toys and supplies. Stock up or get replacement items here for your feline family member.