Tent

The Tenth Doctor suggested that single molecule fabric would allow tents to be packed into thimbles. (TV: The Sontaran Stratagem)

Iris Wildthyme once held a party in a meadow, with a marquee and tents. (PROSE: The Party in Room Four)

Information from invalid sources
The Pod was a music festival in Pete's World that was different from all others, as it was broadcast directly to Cybus EarPods and didn't involve "tickets, tents, or dodgy toilets". (NOTVALID: The Pod)