Yes, you can. 

Log into Folksy and go to your Dashboard by selecting 'Your Shop' > 'Dashboard' from the menu at the top of the page.

Use the Holiday Mode link underneath the "Shop Settings" heading on the left hand side of your Dashboard.

Tick the box and click on update to put your shop in holiday mode. Un-tick the box and click on update to come out of holiday mode.

Holiday Mode means that:

• a message will appear over your banner telling people that your shop is on holiday and that you are unable to process order
• buyers will be able to see your items as normal if they go to your shop, but:
• your items will not be available to buy, and will not appear in search or in their categories