Any aquarium equipment (North Colchester, CO4)

Hi folks, my little ones want to keep a tank of aquatic creatures (at least it's not a cat/dog/ferret/bird right 😅) but it's something we're starting from scratch on. I often see various bits of aquarium equipment on here, and I also know it can be verrrrry expensive buying everything first hand. So- do you have any old aquarium equipment lying around in your garage that hasn't been touched in years? (Even if it's old, or something random like aquarium gravel, anything would help!) I'd love to give it a second life if so.

It's half term so can be really flexible with collection times. Thank you so much for reading!