Susan, I use a single duvet cover...which is roughly what you have made!
kat, I remember my Dad using his adding machine, with the handle at the side (still have his last unused paper roll!)
I've had such a wasted day today (see thread of that title). Except that an envelope arrived with vouchers from John Lewis, who run my credit card. So I went there to spend them. The usual rule is something that I will use frequently, but would not otherwise have bought. This time it was a bit more utilitarian. A bathroom bin for wet wipes. These are advertised as flushable, but the water companies differ. So I have baby pad disposal bags, but nowhere neat to put them. Until now.