Usually PC want some weapon they think is cool or some survival equipment they think will give them an edge. Sometime they want books or CD ROMs of books that they think will help them rebuild.
I let them. These little choices are the spice that makes a PC different and relatable. Like the cowboy hat or the 72oz megagulp thermal mug, the .45LC Colt Peacemaker, or SOG tomahawk... It is their affectations and as a PD not insurmountable obstacles.
I don't allow gold, silver, gems....... above $100.... They are legally dead and their estate went to their heirs.
Now I did allow some PCs their own personal stash....... They pooled their money and resources.... Pre-War and built a bolthole of their own... Cars, furnishings, tractors, etc..... Cached in the desert outside Pahrump, NV...... The team awakened outside Riverton.........