I'm unemployed right now and I won't do any of those. Here's why:

Hiking: Buy boots and suitable clothes. Fuel to get to suitable location.

Biking/Rollerskating: Buy equipment. Fuel to get to suitable location.

Picnic: transportation supplies. Fuel to get to suitable location.

Board games: Expensive. Fuel to get to suitable location.

Lan party: Buy games. Fuel to get to suitable location.

All it costs is fuel, utilities, rent, and food. For someone with no income, that is all I can spend money on, and it has to be justifiable. Not "Oh, I play board games every once in a while", because I don't want to have to pass up on a job interview because I stupidly spent my transportation money on board games. Or whatever else.