Microsoft Visio for under twenty quid and Windows 11 Pro for fifteen

I’ve always liked Viso. It’s a great drawing tool. If you want a copy of your own for the mouth-wateringly low price of 17 pounds (or 20 dollars) you can get it here. The installation is a network download. Your purchase from stack social is a licence key that you can use to run the program. I’m using alongside my Office 365 installation - I’m not sure if it would work if I didn’t have Office 365. You’re tied to the 2021 version, but I don’t see that as a huge problem.

They also do Windows 11 Professional licenses for 15 dollars. This is an upgrade licence, you have to be running Windows 10 or 11 at the moment, but with the imminent demise of Windows 10 this might be worth a look. It is also worth buying this if you are running Windows 11 Home on your machine, because the Pro has some features which are very useful, including virtualization.