I would keep the crate until you're sure Penguin's not doing any more travelling. My big wooden crate was used twice. Would have cost a fortune to get a new one.
Because of passports lots more pets are travelling and with the US/Canada being included in the passport scheme, if you're sure you are staying put I'm sure you could sell it on ebay or to one of the animal travel companies.
I can't do the fancy graphics of the other talented cat slaves on this forum, but Welcome Penguin!!!!