PVC by It's Great To Be Home. This blogger posted all the plans to make this. It only takes one person and can be done in an afternoon for aprox. $60. SHe is planning to do a follow up post with the cover for the fort. I think sewing a fabric cover could be fabulous. That would keep it light weight and easy to move around if needed.
Epic Mother's Day Ideas | DIY teacups Succulent Plant - Buy a vintage teacup from your local thrift shop and use them to house tiny succulent plants for a chic alternative to basic clay pots. @stylecaster | Presented by Coach
I made a few adjustments to this great cold frame/greenhouse DIY: 1) flip the box upside down and use it as a cloche to cover the plants so the clear part is on top. 2) use the lid as the base & line it w/ black plastic/paper to absorb more heat from the sun. 3) use biodegradable 4oz espresso cups (google to buy) for seeds. To transplant seedlings, cut bottom off cup, place in the ground - updates & new projects at the 2 DIY Board, https://www.pinterest.com/mclovebuddy/2-diy-garden-outdoors/