The new larger reaper giants are still not quite 5th ed size. This is the new (huge) frost giant queen beside a wizkids prepaint frost giant, and he would be taller if he was standing up straight like she is.
I use these. One straight module and two corner modules. They work great and the modules attack to each other. They are made by Vallejo and I got mine on Amazon. $20 for the straight and $27 for the corner.
Do you still sell the box of 250 square smooth bases? I bought one a while ago and it's almost empty. I looked on the site but I can't find it anywhere. I even tried looking up the sku on the box I have. Thanks.