When choosing a foam insert for your case, you have two options: pick and pluck or custom cut foam. Here is a breakdown of the pros and cons of each type of insert
1690 Protector Transport Case Pick-n-Pluck Foam
A Guide to Pick 'n' Pluck Foam – Peli UK
Package includes: You will get 2 pieces of black high density foam, 2 piece 16 x 12 x 2 inch the quantity is enough to meet your needs, you can cut
HolyMaji Pick and Pluck Pre Cubed Foam, 2 Pcs High Density Customizable Pick Apart Foam Insert, Pre Cutted Case Foam Pads for Board Game Tool
Shell Case Hybrid 320 EVA Carrying Case
How to Repair Pick-N-Pluck Foam - Equipment (No astrophotography) - Cloudy Nights
Pelican 1052 Pick-N-Pluck Foam Insert for 1050 Micro Series Cases
Custom Foam
Pick & Pluck Foam Cases
Customizable Foam - Case Club