Anyone can plant bare root trees for a quick, affordable alternative to buying half-grown trees from a nursery. They don’t take anymore work than nursery trees, and they catch up in growth within a couple of years.
You can grow a lemon tree indoors if your climate doesn’t support growing them outside. It most likely won’t fruit, but these are beautiful plants for the home.
If you have a drill and some old 2-liter soda bottles, you can also make your own DIY drip irrigation system. It’s cheaper and easier than buying a system and getting it installed. And it works very well.