Here is a really simple cricket practice hack: Use two net bays instead of one.

This is because it opens out the net which gives the batsman a more realistic feel of batting in the middle. Nets are typically made more artificial by the feeling on being enclosed in the net. It's safe, almost womb-like in there.

Opening out the net suddenly presents the batsman with a more realistic feel of being "in the open". It adds pressure.

Combine this with other more realistic net elements:

• Bowl pairs of bowlers having six ball each
• Bat in pairs and have someone call runs
• Have a wait time between balls

If you have the right age group you can also have close fielders in front to add pressure. In this picture we used fake fielders for safety:

If resources allow you to do this, give it a try, you might be surprised how well you perform under increased pressure.