I moved into a 2008 built house two years ago. The garden is tiny, 25 ft by 15 ft, though south facing. There's a bit of paving for a patio and the previous owners just dumped a load of blue shingle over everything else.
I didn't do anything until this year when I decided life was too short to get rid of the shingle, and instead just went for everything in pots. Nothing was expensive, so I won't cry if it dies, but so far I have honeysuckle, a couple of clematis, several trees - pear, acer, gingko biloba, three little conifers, some bamboos, a kumquat, two gooseberry bushes, a rhubarb plant, tomatoes, a passion flower, a mock orange, buddleia, wisteria, wegeia ... all in containers. I even have a raised pond in a large wooden box. It's been great fun and the garden looks really quite funky - partly helped along by the large metal flamingos and colourful geckos dotted in amongst the foliage, as well as some cheap and cheerful solar lighting. Very kitsch but I like it.