I threw 2 out before Xmas as we bought a ham that came with one.
I tend to go for the wooden stands easy to put together and take apart when needed.
Amazon have a few no need to spend big money.
Re knife - long thin flexible blade needed. I bought a relatively cheap knife and keep it super sharp.
https://www.amazon.co.uk/Steelblade®...s%2C599&sr=8-7
Something like this would do I am sure. If you are like us it only comes out at Xmas.