I use a dr browns powder pot there's only 3 sections for powder, I'm only using 6 scoops at the moment but there's easily enough room for another few scoops before the top of the tub x
I have a morrisons own brand and a mam powder pot. Each have 3 sections. Currently on 7 scoops but there is definitely space in both for another 2/3 scoops in each compartment x
I don’t know if you use aliexpress but I love this one it’s so cute too (I’ve not tested to see how much it holds but the sections are quite big so I should think 7 wouldn’t be an issue) Just found this amazing item on AliExpress. Check it out! £6.70 | Storage Three/Four Tier Portable Food Container Powder Milk Powder Carton Dispenser Spill Resistant Suitable for 1 to 6 Years Ol https://a.aliexpress.com/_EJ9HA07
I use these ones https://amzn.eu/d/04raokaV
The tommee tippee ones take 8 scoops, just tap it on a hard surface a few times and it’ll compact down.
I got this 2 x pack from Amazon - we currently have 8 scoops but could definitely fit another 1 or 2 scoops in when needed. https://amzn.eu/d/03uwFrlr
On Amazon there are bigger baby powder travel storage. You can fit atleast 25 scoops of powder in it plus it comes with a scooper so you don’t have too carry and wash 100 little pots. It’s really useful
Bebamour Baby Milk Powder... https://www.amazon.co.uk/dp/B0CMR39Q5X?ref=ppx_pop_mob_ap_share
The mam ones seem to fit quite a lot in. We are only on 5 scoops at the minute but I think you could easily get a few more in them x