Thinking of doing a specific Cisco certification (CC[NA|NP|IP|IE])? Then you might be interested in the Community Lab provided by Packet Life.

The ‘Community Lab’ is is divided up into 2 blocks with the same equipment. You are able to book one block of equipment or both for free of charge. Bookings seem to be booked well up into March currently, so it might be a while before you can get access.

Donations are encouraged, but not required in order to get access. Definitely an option if you can’t afford the lab prices offered by the various vendors to get some lab time.