A great resource only 1km out the east gate is the Daiei. It is a store very comparable to Walmart in that you can buy groceries as well as clothes, household goods, toys, and more. The first floor houses a few fast food restaurants, a shoe store, the grocery section, and all the household goods such as dishes, towels, sporting goods, makeup, and many other items.
On the second floor you will find a sit down restaurant, a ¥100 section, an arcade that includes games and small rides for little ones, clothes for men/women/children, restrooms, and even a small indoor play land.
The play area is called Kid’s Us Land. It is open from 10am-8pm and is located at the very back of the store. The first time you go you will have to buy a membership card for yourself and any child over the age of two. 
The membership card is ¥300.The price to play is ¥105 for each 15 minutes you play and you pay this fee at the end. When you enter they will give you a necklace with a paper inside which shows your arrival time. Just show this to the cashier when you are ready to leave and pay for the amount of time you stayed. The area has tables and vending machines with drinks and ice cream and it seems acceptable to bring in snacks. There are video and arcade games that are all free. Kids can jump on a trampoline or run around in the play area that has tunnels, slides, and a ball pit. 
The best part about this place is the free massage chairs for the parents to lounge in while children play. There is a very small gold fish pond where your kids can actually buy bait and go fishing. There is an additional fee for this activity so be sure to ask the cashier for details. Visit the stores website if you would like more information. Note that the site is in Japanese. GPS:35.73557, 139.378889.
DIRECTIONS: Go out the east gate and turn right. Turn left at the first light. At the first stoplight make the far right hand turn, not the immediate right. (See map for clarification) Continue on this road and the store will be on the left. Alternative Directions: Go out the east gate and turn right. Turn left at the first light. Continue on this road. Just pass the first stoplight you will see the entrance to the parking lot on the right hand side. –Renée Booe July 2013
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Need to make a quick run to get some fresh produce or local brown eggs? Why not try Food Land which is only 1km out the east gate. Unlike stores such as the Seiyu and Daiei, Food Land is just a grocery store, which has it perks. It is never very crowed and the ambiance is very relaxing. No loud music or noisy arcades to distract you or make you feel like you are on a game show. There is a large parking lot right in front of the store that is free of charge. They do accept credit cards. I believe the hours are from 9am-9pm but do need to verify this as the hours are not listed in English. Best part about this store is that it is so easy to get to.
