Shower decoration essentials

So I am planning my own baby shower and only ever been to 1 baby shower before so am pretty much guessing with everything. So far hasnt been to bad. But what are some decoration/shower essentials? I know we will need paper plates, silverware, cups, balloons and table cloths. Other than that I am struggling. We are just going simple and on a budget. So everything is going to be teal and silver. I tried pinterest for a checklist but can't find one for what to buy only find one for steps to plan a shower. And help would be greatly appreciated. Thank you!