Awesome packing tip called a skivvy roll. Teaches how to save space in your luggage every time you travel. Budget travel lovers will enjoy this technique because it can mean less packed luggage (and fewer fees).
Want to get crack strong? Building your own crack training system is the way to go. Unlike a home bouldering wall, crack systems take up little space, are easy to build, and cost a fraction of the price.
This is my post on climbing training, focusing on pinches, slopers, and forearms. There's a good amount of info about training finger strength for crimps, but not a lot out there for pinches and slopers.