Sliding style bag clip, inspired by pictures I've seen of other sliding bag clips. There are several companies that make clips of this style, but I think Gripstic* (as pointed out by gspence in the comments below) is the originator of the commonly available designs sold in the US.

I added some longer clip designs that can be printed horizontally. They include a small amount of support material built into the design that should be removed after printing.

Printer:
-- Eustathios

Filaments:
-- Atomic Filament Aqua PLA
-- Atomic Filament Amethyst PLA
-- Atomic Filament Starry Night PLA
-- Atomic Filament Ruby PLA
-- Atomic Filament Sapphire PLA

*affiliate link