This is a Box Organizer, which can be used for anything, it's not that big it is only (133mmL*78.38mW*19mmH). 

Below are the files in STL, & GCODE for the Model. I printed this on my Ender 3 and it came alright, although it had some warping because of the conditions it was in, overall it came out alright. I also used a 5% infill and some support on the inside to hold the top side overhang. 

FYI if you are using PLA to print this and you use support it's super hard to get the supports off.