cobbled
Put together quickly and roughly from whatever is available.
Cobbled means put together quickly or crudely from whatever materials or parts are available. When you cobble something together, you're making do with what you have rather than building it properly from scratch. A student might cobble together a science project the night before it's due, using cardboard boxes and tape instead of the carefully planned design they'd imagined. A chef might cobble together dinner from random ingredients left in the refrigerator.
The word often suggests the result isn't quite polished or permanent. If you cobble together a fort from couch cushions and blankets, it might collapse if someone bumps it. A computer programmer might cobble together some code to solve an immediate problem, knowing they'll need to rewrite it later.
Something cobbled together works well enough for now, but usually isn't meant to last forever.