Ok, we’ve already covered shampoo bottles and plastic drinking bottles but I think shower gel bottles are a little different.

The ones I use have got a little, I don’t know, valve thing on the top to stop the gel falling out while they hang upside down in the shower. I don’t know whether this would stop anything as wet as water but the liquid gel stuff stays put.

So could this be used for anything else? I guess I could refill it with liquid soap for sink-based handwashing – either commercial stuff I’ve bought in bulk or when I get around to make my own from soapnuts – but any different, non-soapy suggestions?