multicolored flat balloons on a blue squared grid paper

abstract air anniversary background balloon beautiful best birthday blank blue blueprint brochure card cartoon celebration checkered child childhood colorful decoration design element empty entertainment event flat fly geometry gift glossy graph graphing green greeting grid group happy holiday icon illustration illustrator line linear lineart lined measure memo notebook notepad object office orange outlane page paper party pattern pink play ribbon rubber school sheet square squared stationary stationery study technical template toy vibrant wallpaper white write year yellow