If you're an older boomer or younger senior, you have probably attended several rock concerts over the decades.
Perhaps buying a $4.99 souvenir T-shirt was too expensive back then, but there's still a chance for those who hope to tie-dye before they get old. Retro rock T-shirts can be found at various sites.
For example, www.hip pieshop.com has a large selection of concert, rock band and '60s-themed T-shirts. If you can't fit into your size small tie-dyed peace-sign T-shirt from 1968, you can order a new, larger one here.
Other sites where you can find some groovy new versions include www.con certtee.com and www.freakshop.com. And www.wolfgangsvault.com sells apparel and original poster art. Newsday