LOL! Sorry! what a prediciment. So you have blocks for complete quilt, but no sashing? Or is the pic all the blocks you have?
The fabrics are all blenders, do you have a stash fabric that has 2 or more of the colors? A blue? A green? Sash it in that? No stash? buy a bold geometric or a floral that picks up the colors.
If those handful of blocks are all you have, sew them together & give as a baby gift. I like to make tummy time mats. Very heavy quilts that wont scrunch up when baby wiggles. Usually back with denim for the weight/stability. A baby will love your bright colors. (and won't know they are "ugly" :-D )
sorry about duplicate info, see I was typing from the first post only....