The earliest use of the word "playpen" is found in the Oxford Dictionary in 1902. They were in use long before that, however.
put in a closed room and play with it or buy a playpen
A child will stay in a playpen for about 30 to 45 minutes at a time.
Playpen - 2010 was released on: USA: 9 April 2010 (video premiere)
Some possible ways to keep a cat away from a child's playpen is to close the door of the nursery, or to be aware of the cat's movements and spraying it with water using a squirt bottle whenever it ventures close to the playpen. Other suggestions offered include using a bug net to cover the playpen. One can also deter cats by swatting a newspaper close to them whenever they aim for the playpen.
Someone that is looking to purchase a pet playpen can do so at a local pet supply store such as Pet Value. If one wishes to shop online that one can find a pet playpen at websites such as eBay or Amazon.
Not unattended.
by folding it......
No you cannot.
I have a wooden playpen that needs a home but I don't live in Canada. Are you interested in shipping it - I have no idea of cost involved. The playpen is from the 1950's so does not meet today's safety standards for use with babies or toddlers.
The pronoun 'her' is functioning as a possessive adjective, placed before the noun 'playpen' to describe that noun as belonging to a female.
by folding it......
Again, amen, playpen, yen, when, etc.