You do not have to spend lots of money to do birthday decor at home. Dollar tree have preety good things that would work just fine. You can spend money to get a gift instead spending on a decor that is going to go waste after one day anyways.
Following are the decor you could use to do birthday decor. Just get fun colors and have fun.
1.Birthday banner/garlend
2. Pom pom garlend
3. Flower garlend
4. Baloons
5. Hilium baloons (no. 1 baloon)
6. Birthday crown
7. Birthday hats
Stay home mom’s life 