Large White Plastic Stackable Tray - 14 3/4"W x 8 1/4"L x 1"H - Set of 3

i used these to hold my pets food bowls since sometimes they can make a mess and mats dont really help with containing messes i used some double sided tape to keep them secure and theyve been doing a pretty good job for what ive been needing them for

These trays are exactly what I needed. I am using them as saucers under plants on the windowsill. So I wasn't concerned with looks or presentation. They are cheaply made but the right size and a high enough lip for my purpose.