co-sleeper or bassinet

I would love to see a plan for a co-sleeper or a bassinet. My husband and I are really excited about co-sleeping, but the co-sleepers we've seen are 200$-500$!! Plus, a lot of them are not very pretty. I'm nervous about making the plans myself so I would really, really appreciate seeing some plans for them!! (The only plans I've found online are ones that slide under the mattress instead of free-standing co-sleepers, though the stores are full of 500$ free-standing co-sleepers.)

Thanks!