Lowes has a real good selection of them. They have a cup you have to take out to dump AND they also have a hose to drain it.
I set mine just outside the bathroom and ran the hose it came with to drain to the shower. That way you don't have to keep draining the cup.
BTW in the cup mode don't worry it shuts off when full so it won't spill over.
You will be surprised how much better your AC keeps the temps cooler inside with a dehumidifier.
It's THE reason I bought one on recommendation of the Mobile Repair guy when I decided to stay thru a Florida summer.
What a dif the dehumidifier made in making it cooler in the hot hot days of a Florida summer I gained an easy 10 degrees cooler with the dehumidifier running. :C