

Well there’s a lot of useful things that 100 pounds can get you. Depending on what you consider incredibly useful, and what you do everyday. A quick list of the top of my head:
- good quality first aid kit
- old/new but shit smartphone
- pair of decent working boots
- shit ton of used clothes (atleast where I live, idk about the UK), to wear or as fabric
- set of screwdrivers and bits
- cheap drill, or good used drill
- used laptop
- used oscilloscope
- used all kinds of electronics really; TVs, displays, audio stuff
- thermal water bottle
- Self-defense stuff
Doesn’t GPS work on Linux phones? As for map apps, OpenStreetMaps based apps are free and more acurate than google (atleast in my region), the only thing that might be lacking is realtime traffic information.