Some ideas for saving. Appreciate your input as well!

Hello I found a ways to save a buck or two.

My main idea I follow is that the same stuff meant for businesses is cheaper than for an average consumer. Thats why I try to get industrial stuff rather than normal one from store.

Thus, looking for an ideas what else could I find with above in mind. Let me share what I have so far:

1. Toilet paper!
   I am totaly sick of buying expensive toilet paper. Its getting way too expensive and you literally flush it down the toilet. I am buying Jumbo rolls which are huge and I also bought industrial dispenser which I use now. Its way cheaper, you can still choose quality you like and you dont have to change empty rolls all the time. This thing lasts 2 months and looks good since I bought nice dispenser.
2. Shower gel
   Bought huge canister meant for hotels. Same as toilet paper, cheaper, you still get to choose quality you want and I just refil my dispenser once in a while (I like dispensers lol) This could apply for shampoo as well but I didnt try it yet.
3. Soap
   Guess what - I have a soap dispenser :D and bought huge canister as well, not buying soap in the store anymore.
4. Rice, brocolli, chia seeds, nuts and others
   This might not be so special, but where I live, you cannot get the big packs usually. Thats why I shop for these in the stores that are designed for restaurants, businesses etc. There is one that sells only to companies. I have business so I am allowed there and use it for personal shopping - its bigger with less people, prices are (usually) better and its good for things that lasts, like a rice, pasta, frozen stuff etc.
   

Do you have any other ideas/hacks ? Feel free to post them! :)