We have 2 of these play yards that we used in different areas of our house for our daughter when she was a baby and a younger toddler:

https://www.amazon.com/North-States-Superyard-Colorplay-Playard/dp/B006NTY1HU/ref=redir_mobile_desktop?_encoding=UTF8&ref_=ya_aw_od_pi&th=1

They are large, sturdy, stable and in excellent used condition.  We paid $110 for each; asking $40 each. 

Thanks,
Emily