Dremel VersaTip / Soldering Iron & Hear Gun
I got this as it was only a little more expensive than a gas-powered/cordless heat-shrink gun. It does this job very nicely – but is also a gas-powered soldering iron and a whole load of other heat-related fun. It even allows you to wood-burn, if you were so inclined. Sure it is a thing for the hobbyist, and I’d probably get a Hakko FX888 or something if I were and electronics pro, but this is fine for a start.
Where to buy (For some reason only in the UK right now.) :