Check out thingiverse or printables for free stuff to print. There's so much to make!!!
Also, I've messed with Wanhao printers, and the slicer profiles were not great and did require a lot of fine-tuning. New printers either come with their own slicers or a Cura profile.
That's true, but they use nonstandard voltages on their chargers, and it can be tough to find an aftermarket that matches both the voltage and current of stock. Then you run into the "Dell has detected a non-Dell charger" scenario.