Aldi drone
I bought a £50 drone from Aldi to better investigate how to down police drones surveilling protestors. I used to be a protestor and the technology stirred interest, especially when it was used against us but also what use it could be for us. I can definitively reveal a £50 drone is no use to anyone except a bored child. I got a lot of footage of me running after it after it reached 50m high and crashed 200m away. If you tether it with dental floss then you can run a cable across a steep height. Dental floss certainly makes finding it easier.
It will carry a mobile phone if you are prepared to lose that phone, you can block it fairly easily, but it is great as a fan in summer, and for scaring mice indoors.
I live near a field where people with expensive drones play. They have dogfights, and scare the bejesus out of me.