Knackered here, too. I haven't stopped today.
Got up, cooked everyone breakfast, cleared up, made DS's birthday cake, cleaned kitchen/bathroom, hoovered whole house, steam mopped living room/kitchen/bathroom, had a shower, went to Sainsbury's (where I queued next to Vic Reeves and his awful wife), iced DS's cake, picked DD up from the library, went bowling, came home, ate dinner and cake, and I've just got in from dropping DS's friend home. Knackered!
Then it's up early in the morning for rugby, maybe a cup of tea at MIL's, as she lives near Whitstable, then home before I go to Gatwick. I'm tired thinking about it!
Hope your conference goes well, Sultana.
And yay for melted-plasticine scans :o