I made some progress on my enclosure this weekend but there is still more to do like adding the wood trim around the edge of the acrylic, adding hinges, adding vent holes and fan, a handle for opening the lid, and a LED strip or two.
The red acrylic was purchased from Amazon https://www.amazon.com/gp/product/B006FLYJHI
and the plywood was purchased from Lowes but can also be found at Home Depot for around $5 for a 24" x 48" sheet.
I have a 90mm fan that I plan on using with an activated carbon filter and a hose going to my window to vent the exhaust outside.
I'll post more pictures as this progresses.