Kayak
I bought an Intex Challenger K2 inflatable kayak in 2018, for around £100.
The idea was that it would be portable enough to transport and to store.
I have been using it in the summer on my local canals.
To do this you need a licence from the Canal & River Trust (£53.71 as of JAN 2020).
However, the same license is part of the British Canoeing membership benefits, which is cheaper! (£45 as of JAN 2020). Among other things, membership also includes Combined Liability Insurance. So I joined.
Future plans are to look at modifications ... I am considering making a solid floor ... possibly with an integral mount for a trolling motor.