I really like #66, but the 'cloud' seems a bit too close to the text? took me a second to get #67, and at first i didn't like it, but not that i see the clouds, i like it... maybe if the 4 and 8 were separated a bit? the eight looks 'messy' compared to the four, maybe because of proximity?
nice entries, thanks for the submissions, hope to see more!
#121 is nice, but I don't think the digital clock font works as well here. can you try something like #121 but with a different font? maybe even the original font? something else that's BOLD and grabs attention, but not quite as common?