a couple dozen or more mousetraps.
Other obstacles.

Make sure scouts all have on shoes. The mousetraps do not hurt through shoes, but no need to tell the scouts that before the game.

Mark off a play area with a starting line about 30 feet from finish line. Make the area 15-20 feet wide, depending on the number of teams.

Team leader is at finish line.
First scout in patrol is blindfolded and stands at starting line with rest of patrol lined up behind him.

On signal, every patrol leader instructs his player through the minefield. If he trips a trap or runs into another obstacle, he is out and the next scout in the patrol is up.

The patrol with the most scouts through the minefield in a set amount of time wins.

A more narrow play area makes collisions between players more common.

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Just use chairs as obstacles for a simpler game.

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For a massive, quick game, have scouts partner up. All the blindfolded scouts stand at one end and their partners are at the other. On 'GO', all seeing scouts try to guide their blind partner through the minefield to be the first to reach safety. It's loud and wild!