Flexibility. Outside of pay/benefits, I feel like flexibility is the ultimate perk.

We're a small software SaaS & consulting shop. 15ish employees. The atmosphere is relaxed, and there aren't cheesy corporate posters anywhere.

On the flip side, we also don't have bean bags or an open office.

We work standard 40-45 hours/week. We stay motivated and fresh by working remotely every now and then or by taking a long weekend whenever needed.

I've been offered better paying jobs at fairly large enterprise companies... but the flexibility offered here means to much to me.

Motivation doesn't really take gimmicks. You just need to have a work environment that doesn't encourage burnout or neglecting your life outside of work.