A wide mouthed jar covered with a net held in place with several rubber bands, or by a lid with air holes punched in it. For ground nesting species, supply a cap filled with water. Provide a broken flower pot or piece of bark for the spider's shelter. A piece of paper toweling can be used to replace the soil for some species. Place the stick in modeling clay so that it doesn't move around.
Most spiders eat live insects.
Many trap insects for food using a sticky web which can be a beautiful spiral or an apparently unorganized mass of threads. Providing food for a spider can be easily done by trapping flies, or other insects, and releasing them into the spider's container. Insects used for food must be alive and not dramatically bigger than the spider. Spiders will not accept dead insects. Prey is injected with poisons that immobilize them.