I'm a fan of making cheap fast floral displays. I don't gave any training or any knowledge but I like to see flowers in containers other than vases and particularly like to gift home arranged small bouquets especially inexpensive ones that look great.
For this quick arrangement you will need :
flowers ideally with strong stems like carnations & chrysanthemums
a fresh flower foam holder that fits into your container ( you can buy a circular shape in a dish like I have, or use a block and cut to a size that fits your container)
something to cut the flower stems with like scissors
a container or dish like a cereal or soup bowl.
2. Wet the foam and fill the well with water ( this can be topped up as needed)
3. Cut the stems into roughly the same length
Large flower blooms make good focal points & the smaller flowers make good filling flowers
4. Start the arrangement with symmetrical placements of flowers & colours and built around this.
adding contrasting flowers as fillers in between the first flowers
Continue to fill out the done shape, but don't worry too much about perfection, this is about putting the display together in a pleasing way. it takes time & practice to get a perfect globe like you would from the florist who has been trained in techniques.
5. Next place the flowers in a suitable bowl like a white soup/cereal bowl.
Here it is a quick posy of flowers ready to adorn a coffee table or shelf in 5 minutes.
The great thing about this is you can easily use the flowers that are discounted and you don't need many flowers. The cost here was minimal with the flowers costing £3 and the foam display cost less than £1and the bowl was already in the house. This type of arrangement in a pair of mugs would also make a lovely housewarming gift for a friend.