Re: DIY wheel truing stand
You can get one of those bike trainers (you clamp in your bike at the back wheel).
Get a used one cheap at a yard sale. They are handy when doing maintenance because they hold your bike up straight and the back wheel can turn, allowing easy maintenance on the chain, sprockets, tensioner, etc.
“You're only young once, but you can be immature as long as you like" -Unknown