I use 66 quart sterilite tubs from Amazon as litter boxes. If you have Amazon prime - they also ship a great clumping litter for $13 and free shipping (40 lb bags). I have 2 and go thru about 40 lbs a week.
Get at least 1 of these scratching posts - even my full grown MCs love this and can't knock it over. My breeder has a couple of these too.