This is another of those gifts that is relatively simple to make and can be made using scraps so that it doesn’t cost much to make either. I have used a simple mosaic block and the finished hot water bottle cover is about 15″ by 9.1/2″. You’ll need to check the size of your hot water bottles in case they are substantially different from that.
sixteen 5.3/8″ squares in both light and dark fabric
four strips 3″ by 10.1/2″ in dark fabric, one strip 5″ by 10.1/2″ in dark fabric.
lining and wadding: one rectangle 10.1/2″ by 15.1/2″ and one rectangle 10.1/2″ by 20.1/2″
Making the hot water bottle cover
Use all the 3.3/8″ squares to make half square triangles. Lay a dark square and a light square with right sides together. Mark a line along the diagonal and sew a 1/4″ seam either side of the line. Cut along the line to make two half square triangle units.
Lay the half square triangles out as shown in four rows of four squares each. Sew the squares together across the rows and then sew the rows together. Make two of these blocks. As there are so many half square triangles I opened the seam allowances rather than laying them to one side. Make two of these. Press the blocks and then sew a 3″ by 10.1/2″ rectangle to the top and bottom of both the blocks.
Sew the 5″ by 10.1/2″ rectangle to the top of one of the blocks. Layer both blocks with wadding first then patchwork with the right side up and then lining fabric with right side down – or do as I did and use a backing fabric that is the same both sides!
Sew a 1/4″ seam around three and a half sides, leaving a gap to turn each block right side out. Trim the seam allowance and clip across the corners to reduce bulk. Turn the right way out through the gap. Turn under the seams at the gap and topstitch all the way round to close the gap and to hold the layers in place. You may wish to do a little quilting here. I chose not to because I felt that the air trapped between the layers if they were’t quilted would act as extra insulation. That’s just personal choice.
Sew the front and back of the hot water bottle together
Lay the blocks with lining fabrics together and the bottom of the blocks lined up. Fold the extra section on the longest block down on itself so that the top edges of the blocks are now in line. The photos may seem confusing – the left hand photo shows the smallest block on top while the right hand photo shows the longest block on top. Sorry!
Sew the two blocks together onboth sides and across the bottom, leaving the top open to form a pouch for the hot water bottle. I used a 1/2″ seam here to avoid the seam allowances, but it is still fairly bulky at the top where there are three layers. You may prefer to handsew that part of the seam. When the hot water bottle is in the cover, flip the extra length of the longer block over to coer the top of the bottle.