I just wanted to share that I found the best free paintball caddy out there. I found it in a recycling bin, it holds almost a case of paintballs and fits pods perfectly. Let me know if you guys have any other handy cheap paintball ideas
Sadly they don't make many detergent bottles with the large spouts like they used to. I've got a foldgers coffee can (plastic) with a large spout like that glued to the lid that I let friends use when they come out to play (not that often) so they can minimize paint spillage. Can only holds a bag though.
The advantage of the can however is that the entire top of it comes off, so you can dump a full bag into it at once, and then use the spout to carefully fill pods. A full on detergent bottle like you have would likely take more effort to fill with paint from a bag then to fill pods with the bag.