Pronoun Island: it/it and they/them examples

Here are some example sentences using my it/it pronouns:

It went to the park.

I went with it.

It brought its frisbee.

At least I think it was its.

It threw the frisbee to itself.

Here are some example sentences using my they/them pronouns:

They went to the park.

I went with them.

They brought their frisbee.

At least I think it was theirs.

They threw the frisbee to themself.