Collection Items/Cut outs

Hello fellow halo lovers!  these past 2 hours i have spent amassing a bookmark tab on MANY halo related objects (such as mega blocks, books, arts, editions, clothing, posters,  armors, action figures and so on!) and missing but a few things i need to complete my satisfactory list.   When they are about to launch a sell for halo at a gamestop or wherever, they always have those large, professionally made cut outs.  and i need them.  i have searched many phrases and such but can only find a single one.  here is a reference image, and if you know where to get these and anything else i may be interested in, please please let me know.  THANKS!