@deejay has kindly started a list to identify some of the items in the photos
IMG 1859 - Cisco SF100 - small business Cisco switch - £40 used (according to Amazon)
IMG 1881 - Nokia ONT - is used for connecting FTTP in the home - not much value because usually an FTTP ISP would provide you with an ONT anyone
IMG 1873 - ZTE 4G Hub - looks like it could be locked to 3 broadband though? looks like one of these https://shorturl.at/aeimY
IMG 1872 - Adtran XGSPON ONT - same as 1881 - not much use to anyone really
IMG 1871 - ZyXEL - looks like a VDSL or ADSL modem? Can't see a model number but looks like a ZyXEL VMG1312-B10A though?
IMG 1870 - VDSL Router - not sure on value. Not a lot?
IMG 1887 - Looks like a laser printer - seems to be £200 online
IMG 1885 - HG612 - looks like a Huawei, not OR branded one! - probably £30? The 622 I'm not sure about? That looks more like a full blown router
IMG 1994 - TalkTalk WiFi router of some description? Need to see a bit more of what is in the box.
IMG 1883 - Grandstream - telephone device? ATA perhaps? Not sure - can see a model number but it's a bit small
IMG 1882 - Comtrend VR-3000? Looks like a A/VDSL router
IMG 1880 - Openreach GPON terminal, as other GPON ONT notes above, not much value to anyone
IMG 1877 - Looks like fibre - ethernet media converters? Look old though - appear to have SC connectors on them
IMG 1879 - Another GPON terminal