/get deco_ball_beach_01 beach ball
/get deco_ball_beach_01_suika watermelon beach ball
/get deco_summer_beachmats_01 beach mats
/get deco_summer_bubblemachine_01 bubble machine
/get deco_summer_bubblemachine_01_L Bubble machine (left)
/get deco_summer_bubblemachine_01_R Bubble machine (right)
/get deco_summer_chair_01_blue recliner (blue)
/get deco_summer_chair_01_green recliner (green)
/get deco_summer_chair_01_pink recliner (pink)
/get deco_summer_confetti_01 Paper blowing snow
/get deco_summer_firework_01_blue Fireworks (blue)
/get deco_summer_firework_01_green Fireworks (green)
/get deco_summer_firework_01_red Fireworks (red)
/get deco_summer_parasol_01_blue Parasol (blue)
/get deco_summer_parasol_01_color Parasol (color)
/get deco_summer_parasol_01_red Parasol (red)
/get deco_ukiwa_01_blue swimming ring (blue)
/get deco_ukiwa_01_donut swimming ring (donut)
/get deco_ukiwa_01_flamingo swimming ring (flamingo)
/get deco_ukiwa_01_pink swimming ring (pink)
/get deco_ukiwa_01_suika swimming ring (watermelon)
/get wp_cracker_01 party spray
/get wp_watergun_01 water gun
This is the overview of all summer item codes in "Survival Project". It also solves this problem for everyone in great detail. I believe everyone will suddenly understand it after reading this guide.