If you have never made one, i would say give it a try! Start with the the paper ones that you can make and see how it goes. You can use lots of materials to make your own garland. If you do want to use them in the garden, be sure to use plastic or remove it when drops of rain begin to fall... I've made garlands by hand, but i must say that the quickest way to make them is by using a sewingmachine (especially when you are working with fabric or felt). The garlands that i've made so far: one with paper cupcake holders, one with paper hearts, 3 with felt hearts and several with paper punched figures (good way to use your punches again!). On my list is the pompom garland and ehh i wanne make a real long one xD
Enjoy the garland parade & i hope you feel inspired enough to make one!