Airtight Food Storage Containers with Lids - Crystal Clear San Body Containers for Organizing Kitchen - Easy to Open/Close Lids with Ergonomic Knob Design - 2.6 QT

I used the Rubbermaid Brilliance but those leak if they’re tilted more than a few seconds. I use this now, https://a.co/d/05cChexD It says unavailable and may be larger than you want but search for that in a smaller size. I haven’t left it upside down or anything like that, but it won’t leak moving around in transportation. I have it filled with a ton of 6 inch grubs and 6 refill bottles so it’s sloshing around at the seal plenty.